d4511fa399217b186b74d425d5a0857ae7fe394c9993d76f79beccf2ecea92e2

Analysis

max time kernel
122s
max time network
15s
platform
windows7_x64
resource
win7v20210410
submitted
25-05-2021 06:20

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General

Target

BjHM6PDDCwG9GvC.exe
Size

1.3MB
MD5

58753a65f6bcaf7b06217d456bd3fa1a
SHA1

5031df39b31c8ceb0ad15e80156a2349c2fd5ade
SHA256

d4511fa399217b186b74d425d5a0857ae7fe394c9993d76f79beccf2ecea92e2
SHA512

47ba296df03054cf97a865d24de2ec87e20c9865963cdafa4eee86736e1af1003463d2b0623467d70756d286f9917d31a4a2deb9d0d8c28e7ed345f0b015fd35

Score

9^/10

Malware Config

Signatures

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

resource	yara_rule
behavioral1/memory/1888-63-0x0000000000370000-0x0000000000375000-memory.dmp	CustAttr

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
480	powershell.exe
856	powershell.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1888	BjHM6PDDCwG9GvC.exe
1872	powershell.exe
856	powershell.exe
1872	powershell.exe
480	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	480	powershell.exe
Token: SeDebugPrivilege	856	powershell.exe
Token: SeDebugPrivilege	1888	BjHM6PDDCwG9GvC.exe
Token: SeDebugPrivilege	1872	powershell.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 856	1888	BjHM6PDDCwG9GvC.exe	29
PID 1888 wrote to memory of 856	1888	BjHM6PDDCwG9GvC.exe	29
PID 1888 wrote to memory of 856	1888	BjHM6PDDCwG9GvC.exe	29
PID 1888 wrote to memory of 856	1888	BjHM6PDDCwG9GvC.exe	29
PID 1888 wrote to memory of 480	1888	BjHM6PDDCwG9GvC.exe	31
PID 1888 wrote to memory of 480	1888	BjHM6PDDCwG9GvC.exe	31
PID 1888 wrote to memory of 480	1888	BjHM6PDDCwG9GvC.exe	31
PID 1888 wrote to memory of 480	1888	BjHM6PDDCwG9GvC.exe	31
PID 1888 wrote to memory of 1172	1888	BjHM6PDDCwG9GvC.exe	33
PID 1888 wrote to memory of 1172	1888	BjHM6PDDCwG9GvC.exe	33
PID 1888 wrote to memory of 1172	1888	BjHM6PDDCwG9GvC.exe	33
PID 1888 wrote to memory of 1172	1888	BjHM6PDDCwG9GvC.exe	33
PID 1888 wrote to memory of 1872	1888	BjHM6PDDCwG9GvC.exe	35
PID 1888 wrote to memory of 1872	1888	BjHM6PDDCwG9GvC.exe	35
PID 1888 wrote to memory of 1872	1888	BjHM6PDDCwG9GvC.exe	35
PID 1888 wrote to memory of 1872	1888	BjHM6PDDCwG9GvC.exe	35
PID 1888 wrote to memory of 1536	1888	BjHM6PDDCwG9GvC.exe	40
PID 1888 wrote to memory of 1536	1888	BjHM6PDDCwG9GvC.exe	40
PID 1888 wrote to memory of 1536	1888	BjHM6PDDCwG9GvC.exe	40
PID 1888 wrote to memory of 1536	1888	BjHM6PDDCwG9GvC.exe	40
PID 1888 wrote to memory of 1088	1888	BjHM6PDDCwG9GvC.exe	39
PID 1888 wrote to memory of 1088	1888	BjHM6PDDCwG9GvC.exe	39
PID 1888 wrote to memory of 1088	1888	BjHM6PDDCwG9GvC.exe	39
PID 1888 wrote to memory of 1088	1888	BjHM6PDDCwG9GvC.exe	39
PID 1888 wrote to memory of 1092	1888	BjHM6PDDCwG9GvC.exe	37
PID 1888 wrote to memory of 1092	1888	BjHM6PDDCwG9GvC.exe	37
PID 1888 wrote to memory of 1092	1888	BjHM6PDDCwG9GvC.exe	37
PID 1888 wrote to memory of 1092	1888	BjHM6PDDCwG9GvC.exe	37
PID 1888 wrote to memory of 1716	1888	BjHM6PDDCwG9GvC.exe	38
PID 1888 wrote to memory of 1716	1888	BjHM6PDDCwG9GvC.exe	38
PID 1888 wrote to memory of 1716	1888	BjHM6PDDCwG9GvC.exe	38
PID 1888 wrote to memory of 1716	1888	BjHM6PDDCwG9GvC.exe	38
PID 1888 wrote to memory of 1368	1888	BjHM6PDDCwG9GvC.exe	41
PID 1888 wrote to memory of 1368	1888	BjHM6PDDCwG9GvC.exe	41
PID 1888 wrote to memory of 1368	1888	BjHM6PDDCwG9GvC.exe	41
PID 1888 wrote to memory of 1368	1888	BjHM6PDDCwG9GvC.exe	41

C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
"C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:856
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FcngqEfa.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:480
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FcngqEfa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7F7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1172
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FcngqEfa.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1872
- C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
  "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  PID:1092
- C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
  "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  PID:1716
- C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
  "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  PID:1088
- C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
  "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  PID:1536
- C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe
  "C:\Users\Admin\AppData\Local\Temp\BjHM6PDDCwG9GvC.exe"
  2⤵
  PID:1368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/480-101-0x0000000006140000-0x0000000006141000-memory.dmp

Filesize
4KB

Download
memory/480-134-0x0000000006310000-0x0000000006311000-memory.dmp

Filesize
4KB

Download
memory/480-95-0x0000000005650000-0x0000000005651000-memory.dmp

Filesize
4KB

Download
memory/480-100-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/480-108-0x0000000006250000-0x0000000006251000-memory.dmp

Filesize
4KB

Download
memory/480-90-0x00000000047E0000-0x00000000047E1000-memory.dmp

Filesize
4KB

Download
memory/480-71-0x0000000000620000-0x0000000000621000-memory.dmp

Filesize
4KB

Download
memory/480-133-0x00000000062C0000-0x00000000062C1000-memory.dmp

Filesize
4KB

Download
memory/480-87-0x0000000004912000-0x0000000004913000-memory.dmp

Filesize
4KB

Download
memory/480-124-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/480-84-0x0000000004910000-0x0000000004911000-memory.dmp

Filesize
4KB

Download
memory/480-116-0x0000000005610000-0x0000000005611000-memory.dmp

Filesize
4KB

Download
memory/856-67-0x0000000075161000-0x0000000075163000-memory.dmp

Filesize
8KB

Download
memory/856-86-0x00000000048F2000-0x00000000048F3000-memory.dmp

Filesize
4KB

Download
memory/856-74-0x0000000004930000-0x0000000004931000-memory.dmp

Filesize
4KB

Download
memory/856-85-0x00000000048F0000-0x00000000048F1000-memory.dmp

Filesize
4KB

Download
memory/1872-88-0x00000000049A0000-0x00000000049A1000-memory.dmp

Filesize
4KB

Download
memory/1872-89-0x00000000049A2000-0x00000000049A3000-memory.dmp

Filesize
4KB

Download
memory/1872-81-0x0000000002680000-0x0000000002681000-memory.dmp

Filesize
4KB

Download
memory/1888-60-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1888-65-0x0000000005690000-0x00000000057BF000-memory.dmp

Filesize
1.2MB

Download
memory/1888-64-0x0000000005580000-0x000000000568D000-memory.dmp

Filesize
1.1MB

Download
memory/1888-63-0x0000000000370000-0x0000000000375000-memory.dmp

Filesize
20KB

Download
memory/1888-62-0x0000000004D30000-0x0000000004D31000-memory.dmp

Filesize
4KB

Download