73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349

General

Target

73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
Size

21KB
MD5

4fa9e799040df3b7131e264b32a8cfd6
SHA1

770c5c1d01677afca31515a9a9bbe520f41a1060
SHA256

73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349
SHA512

64dc76b9cc0dd42094db0621d369c252e7e06f431f5ee2d5d5a8041db544700f89897aea4f9c031da7a62156b2835b311a6c56d1e6a359083576b8719f9b8f18
SSDEEP

384:OGLvGoN8npeUWozguegkwZNDI3ku6ZRpesDuxqQ:Xvinpe3tgkmdEl0LKxx

Score

7^/10

persistence

Malware Config

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Zxtsqjwh = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bmcnu\\Zxtsqjwh.exe\""	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4972 set thread context of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84

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

pid	Process
4240	powershell.exe
4240	powershell.exe
4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
Token: SeDebugPrivilege	4240	powershell.exe
Token: SeDebugPrivilege	4236	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 4240	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	81
PID 4972 wrote to memory of 4240	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	81
PID 4972 wrote to memory of 4240	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	81
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84
PID 4972 wrote to memory of 4236	4972	73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe	84

C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
"C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4240
- C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
  C:\Users\Admin\AppData\Local\Temp\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4236

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\73b9f20e45050ddac888a8fc53be2023393b49b8343ed721d44461fab739d349.exe.log

Filesize
1KB

MD5
e87e48b105757e1c7563d1c719059733

SHA1
28a3f2b2e0672da2b531f4757d2b20b53032dafc

SHA256
0aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461

SHA512
bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968

Download Submit
memory/4236-143-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/4240-138-0x00000000062F0000-0x0000000006356000-memory.dmp

Filesize
408KB

Download
memory/4240-136-0x0000000005A20000-0x0000000006048000-memory.dmp

Filesize
6.2MB

Download
memory/4240-137-0x0000000006280000-0x00000000062E6000-memory.dmp

Filesize
408KB

Download
memory/4240-139-0x0000000006980000-0x000000000699E000-memory.dmp

Filesize
120KB

Download
memory/4240-140-0x00000000081C0000-0x000000000883A000-memory.dmp

Filesize
6.5MB

Download
memory/4240-141-0x0000000006E70000-0x0000000006E8A000-memory.dmp

Filesize
104KB

Download
memory/4240-135-0x00000000053B0000-0x00000000053E6000-memory.dmp

Filesize
216KB

Download
memory/4972-132-0x00000000003E0000-0x00000000003EC000-memory.dmp

Filesize
48KB

Download
memory/4972-133-0x0000000005B40000-0x0000000005B62000-memory.dmp

Filesize
136KB

Download

Analysis

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