fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 21:58

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General

Target
fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe
Size 119KB
Sample221001-1vk6dsaedl
SHA256 fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb
MD5 67fae51f3d516475aba401e1fef05ca0
SHA1 56857a68818820b24b551e19d3f7235f754752f3
SHA512 0afb37eb67aec6a07a0ce2c55f6b502fd5fd48ec624fbc69de9042376f84292c1849fec3e71b655ca52327e46fd0b719ad7b874664679dfd4f4ae253e5d85cc2
SSDEEP 3072:bbXowqbv4SxpW3gOHv8U3eKFPkXfk62sw/:HX5e4SxptOP8U35wnw/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	temp.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3832	netsh.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2880-132-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/2880-133-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/2880-138-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3132-142-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/files/0x0006000000022e31-144.dat	upx
behavioral2/files/0x0006000000022e31-145.dat	upx
behavioral2/memory/3836-146-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3132-147-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3836-148-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3836-149-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3836-150-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral2/memory/3836-151-0x0000000000400000-0x0000000000460000-memory.dmp	upx

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	smss.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smss = "C:\\Users\\Admin\\smss.exe start"	reg.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 1072	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	79
PID 2880 wrote to memory of 1072	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	79
PID 2880 wrote to memory of 1072	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	79
PID 2880 wrote to memory of 4752	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	81
PID 2880 wrote to memory of 4752	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	81
PID 2880 wrote to memory of 4752	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	81
PID 2880 wrote to memory of 4216	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	83
PID 2880 wrote to memory of 4216	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	83
PID 2880 wrote to memory of 4216	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	83
PID 2880 wrote to memory of 3132	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	85
PID 2880 wrote to memory of 3132	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	85
PID 2880 wrote to memory of 3132	2880	fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe	85
PID 1072 wrote to memory of 3444	1072	cmd.exe	86
PID 1072 wrote to memory of 3444	1072	cmd.exe	86
PID 1072 wrote to memory of 3444	1072	cmd.exe	86
PID 4216 wrote to memory of 3832	4216	cmd.exe	87
PID 4216 wrote to memory of 3832	4216	cmd.exe	87
PID 4216 wrote to memory of 3832	4216	cmd.exe	87
PID 4752 wrote to memory of 1852	4752	cmd.exe	88
PID 4752 wrote to memory of 1852	4752	cmd.exe	88
PID 4752 wrote to memory of 1852	4752	cmd.exe	88
PID 3132 wrote to memory of 3836	3132	smss.exe	91
PID 3132 wrote to memory of 3836	3132	smss.exe	91
PID 3132 wrote to memory of 3836	3132	smss.exe	91

C:\Users\Admin\AppData\Local\Temp\fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe
"C:\Users\Admin\AppData\Local\Temp\fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe start" /f"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1072
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "smss" /t reg_sz /d "C:\Users\Admin\smss.exe start" /f
    3⤵
    - Adds Run key to start application
    PID:3444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c "reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4752
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d "0" /f
    3⤵
    - UAC bypass
    PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c "netsh firewall set opmode disable"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4216
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall set opmode disable
    3⤵
    - Modifies Windows Firewall
    PID:3832
- C:\Users\Admin\smss.exe
  "C:\Users\Admin\smss.exe" start
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3132
- - C:\Users\Admin\temp.exe
    "C:\Users\Admin\temp.exe" double
    3⤵
    - Executes dropped EXE
    PID:3836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

temp.exe

Path C:\Users\Admin\temp.exe
Size 119KB
SHA256 fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb
MD5 67fae51f3d516475aba401e1fef05ca0
SHA1 56857a68818820b24b551e19d3f7235f754752f3
SHA512 0afb37eb67aec6a07a0ce2c55f6b502fd5fd48ec624fbc69de9042376f84292c1849fec3e71b655ca52327e46fd0b719ad7b874664679dfd4f4ae253e5d85cc2
SSDEEP 3072:bbXowqbv4SxpW3gOHv8U3eKFPkXfk62sw/:HX5e4SxptOP8U35wnw/
MD5 SHA1 SHA512 SSDEEP

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temp.exe

Path C:\Users\Admin\temp.exe
Size 119KB
SHA256 fe25bb53a8803f530d792556cdca0cd0f30682795d8bfbcadfda7534363609bb
MD5 67fae51f3d516475aba401e1fef05ca0
SHA1 56857a68818820b24b551e19d3f7235f754752f3
SHA512 0afb37eb67aec6a07a0ce2c55f6b502fd5fd48ec624fbc69de9042376f84292c1849fec3e71b655ca52327e46fd0b719ad7b874664679dfd4f4ae253e5d85cc2
SSDEEP 3072:bbXowqbv4SxpW3gOHv8U3eKFPkXfk62sw/:HX5e4SxptOP8U35wnw/
MD5 SHA1 SHA512 SSDEEP

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memory/2880-133-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/2880-132-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/2880-138-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3132-142-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3132-147-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3836-146-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3836-148-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3836-149-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3836-150-0x0000000000400000-0x0000000000460000-memory.dmp

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memory/3836-151-0x0000000000400000-0x0000000000460000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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