04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 15:19

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General

Target

04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe
Size

143KB
MD5

66839a5f934952806eea150d2a022140
SHA1

f727ff85a05706b1f36ff9aa8eedba1547768ceb
SHA256

04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87
SHA512

40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b
SSDEEP

3072:YCm/+JvYipDHV4pG6XM8ouZ3bsrDVtWp1MDyGDQcPgOAJocmBeAyBdXRPXyNx7kP:YCm/+JvrDHVGG6X6uZ3bsrJtWp1MDyG7

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1412	mamidou.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
220	netsh.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\35af8da62bb26afe6fa37507b3281eec.exe	mamidou.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\35af8da62bb26afe6fa37507b3281eec.exe	mamidou.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\35af8da62bb26afe6fa37507b3281eec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\mamidou.exe\" .."	mamidou.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\35af8da62bb26afe6fa37507b3281eec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\mamidou.exe\" .."	mamidou.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 25 IoCs

pid	Process
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe
1412	mamidou.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	mamidou.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 1412	3944	04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe	84
PID 3944 wrote to memory of 1412	3944	04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe	84
PID 3944 wrote to memory of 1412	3944	04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe	84
PID 1412 wrote to memory of 220	1412	mamidou.exe	85
PID 1412 wrote to memory of 220	1412	mamidou.exe	85
PID 1412 wrote to memory of 220	1412	mamidou.exe	85

C:\Users\Admin\AppData\Local\Temp\04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe
"C:\Users\Admin\AppData\Local\Temp\04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Users\Admin\AppData\Local\Temp\mamidou.exe
  "C:\Users\Admin\AppData\Local\Temp\mamidou.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\mamidou.exe" "mamidou.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\mamidou.exe

Filesize
143KB

MD5
66839a5f934952806eea150d2a022140

SHA1
f727ff85a05706b1f36ff9aa8eedba1547768ceb

SHA256
04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

SHA512
40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b

Download Submit
C:\Users\Admin\AppData\Local\Temp\mamidou.exe

Filesize
143KB

MD5
66839a5f934952806eea150d2a022140

SHA1
f727ff85a05706b1f36ff9aa8eedba1547768ceb

SHA256
04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

SHA512
40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b

Download Submit
memory/1412-138-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/1412-139-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/3944-132-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/3944-136-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download