8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31

General

Target

8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe
Size

68KB
MD5

c70c332e91e26d3c9275538832957e10
SHA1

c22afac942be0130171260717100647c14e0e0f5
SHA256

8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31
SHA512

360d883ec3c1f05e891ed62a41803d32f827a530ac1c189d903878e2ac63132f71b994a6f58065f621c770f9a0ad57eaff23ca1afd5f8fd5707c5632cd98682b
SSDEEP

1536:vMXxVulAmfx/Wz30ZkHuM4ymdgIfG133EqKopXIwOpruPGBxrzbu1N3XloBMot0E:0sVS3Ckr0NCJpXBkruPG73A+TG3

Score

8^/10

discovery exploit upx

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1712 takeown.exe
660 icacls.exe

pid	process
1712	takeown.exe
660	icacls.exe

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1648-56-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

regsvr32.exe

pid process

1156 regsvr32.exe
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1156 regsvr32.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1712 takeown.exe
660 icacls.exe

pid	process
1156	regsvr32.exe

pid	process
1156	regsvr32.exe

pid	process
1712	takeown.exe
660	icacls.exe

Drops file in System32 directory 3 IoCs

Processes:

regsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\apa.dll	regsvr32.exe
File created	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regsvr32.exe

pid process

1156 regsvr32.exe
1156 regsvr32.exe
1156 regsvr32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

regsvr32.exetakeown.exe

description pid process

Token: SeDebugPrivilege 1156 regsvr32.exe
Token: SeTakeOwnershipPrivilege 1712 takeown.exe

pid	process
1156	regsvr32.exe
1156	regsvr32.exe
1156	regsvr32.exe

description	pid	process
Token: SeDebugPrivilege	1156	regsvr32.exe
Token: SeTakeOwnershipPrivilege	1712	takeown.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exeregsvr32.exe

description	pid	process	target process
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1648 wrote to memory of 1156	1648	8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe	regsvr32.exe
PID 1156 wrote to memory of 1712	1156	regsvr32.exe	takeown.exe
PID 1156 wrote to memory of 1712	1156	regsvr32.exe	takeown.exe
PID 1156 wrote to memory of 1712	1156	regsvr32.exe	takeown.exe
PID 1156 wrote to memory of 1712	1156	regsvr32.exe	takeown.exe
PID 1156 wrote to memory of 660	1156	regsvr32.exe	icacls.exe
PID 1156 wrote to memory of 660	1156	regsvr32.exe	icacls.exe
PID 1156 wrote to memory of 660	1156	regsvr32.exe	icacls.exe
PID 1156 wrote to memory of 660	1156	regsvr32.exe	icacls.exe
PID 1156 wrote to memory of 588	1156	regsvr32.exe	svchost.exe

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch
1⤵
PID:588

C:\Users\Admin\AppData\Local\Temp\8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe
"C:\Users\Admin\AppData\Local\Temp\8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~6cd79b.tmp ,C:\Users\Admin\AppData\Local\Temp\8eec44c4624e4e41e8c8cedddbc05f206aafede5ed580f85fedc3a10fc768c31.exe
2⤵
- Deletes itself
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1156

C:\Windows\SysWOW64\takeown.exe
takeown /f "C:\Windows\system32\rpcss.dll"
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
- Suspicious use of AdjustPrivilegeToken
PID:1712

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~~6cd79b.tmp

Filesize
1.0MB

MD5
4c799a142069f952513246e3eeb0493e

SHA1
81cac70c5f6efe785f779a0e1099f70f4c34a08b

SHA256
56ff5ebd94a6c7d10490023533236fbcff37dfc02965c5d2107e7450c80e9a9a

SHA512
ae6a99f682f792c9eec3ff9073458f460ba15fc6765caa19fcd6ae27e1dcb502f43dc3c3149d7384f5dfcb44c1e8f27eecedfd1963d39c9c8716a4dcf8b53f8f

Download Submit
\Users\Admin\AppData\Local\Temp\~~6cd79b.tmp

Filesize
1.0MB

MD5
4c799a142069f952513246e3eeb0493e

SHA1
81cac70c5f6efe785f779a0e1099f70f4c34a08b

SHA256
56ff5ebd94a6c7d10490023533236fbcff37dfc02965c5d2107e7450c80e9a9a

SHA512
ae6a99f682f792c9eec3ff9073458f460ba15fc6765caa19fcd6ae27e1dcb502f43dc3c3149d7384f5dfcb44c1e8f27eecedfd1963d39c9c8716a4dcf8b53f8f

Download Submit
memory/660-61-0x0000000000000000-mapping.dmp

Download
memory/1156-55-0x0000000000000000-mapping.dmp

Download
memory/1648-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

Filesize
8KB

Download
memory/1648-56-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1712-60-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads