4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3

General

Target

4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe
Size

225KB
MD5

7f873fef35a7958cd107943cea84b35b
SHA1

b0d93c3b8b0110ff6f1284691f6919e4faaf8e30
SHA256

4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3
SHA512

bbf49a798203923586d9cf3d904b43a0647c6b3875dee1e9a56ad00c8ea3c5fe726fdac82ec25b43ae096562024d5264c2199baf23b0cb222e828e1cbe465644
SSDEEP

6144:AA2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:AATuTAnKGwUAW3ycQqgf

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1556	1152	WerFault.exe	103
2124	3184	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe
3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1152	winver.exe
3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 1152	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	103
PID 3184 wrote to memory of 1152	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	103
PID 3184 wrote to memory of 1152	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	103
PID 3184 wrote to memory of 1152	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	103
PID 1152 wrote to memory of 3424	1152	winver.exe	56
PID 3184 wrote to memory of 3424	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	56
PID 3184 wrote to memory of 2956	3184	4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2956

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3424
- C:\Users\Admin\AppData\Local\Temp\4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe
  "C:\Users\Admin\AppData\Local\Temp\4d7f91c4d7d20cfb25ea4b6efb98255f3c5224237cdd4c74b4c8321738478ec3.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1152
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 300
      4⤵
      Program crash
      PID:1556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3184 -s 888
    3⤵
    - Program crash
    PID:2124

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
PID:3436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1152 -ip 1152
1⤵
PID:1048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3184 -ip 3184
1⤵
PID:4632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2956-18-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2956-24-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3184-5-0x0000000003D90000-0x0000000003D91000-memory.dmp

Filesize
4KB

Download
memory/3184-3-0x0000000004710000-0x0000000004D68000-memory.dmp

Filesize
6.3MB

Download
memory/3184-1-0x0000000004710000-0x0000000004D68000-memory.dmp

Filesize
6.3MB

Download
memory/3184-6-0x0000000003D90000-0x0000000003D91000-memory.dmp

Filesize
4KB

Download
memory/3184-7-0x0000000003D90000-0x0000000003D91000-memory.dmp

Filesize
4KB

Download
memory/3184-9-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3184-2-0x0000000003D90000-0x0000000003D91000-memory.dmp

Filesize
4KB

Download
memory/3184-23-0x0000000004710000-0x0000000004D68000-memory.dmp

Filesize
6.3MB

Download
memory/3184-19-0x0000000005B20000-0x0000000006520000-memory.dmp

Filesize
10.0MB

Download
memory/3184-15-0x0000000005B20000-0x0000000006520000-memory.dmp

Filesize
10.0MB

Download
memory/3184-4-0x0000000003D90000-0x0000000003D91000-memory.dmp

Filesize
4KB

Download
memory/3424-16-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/3424-11-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3424-10-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download

Analysis

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