4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d

General

Target

4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe
Size

78KB
MD5

0106ede4fe7c8704ea04b3f66c5d80d6
SHA1

59d774bed7c7c8f76de7fa436e238413870d16b6
SHA256

4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d
SHA512

8ed68cc9a26eb9ce1f9fd0d70ae0d0a6ba91c3d3cc3a2feb730957556f981edbcf41841815220552aedffcf85b1d967442e9d7fe9fd8f5a20ef19d1f7340439e

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1784	tmp1C5.tmp.exe

Deletes itself 1 IoCs

pid	Process
1784	tmp1C5.tmp.exe

Loads dropped DLL 2 IoCs

pid	Process
1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe
1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ShFusRes = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\big5.exe\""	tmp1C5.tmp.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe
Token: SeDebugPrivilege	1784	tmp1C5.tmp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 1964	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	26
PID 1576 wrote to memory of 1964	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	26
PID 1576 wrote to memory of 1964	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	26
PID 1576 wrote to memory of 1964	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	26
PID 1964 wrote to memory of 1936	1964	vbc.exe	28
PID 1964 wrote to memory of 1936	1964	vbc.exe	28
PID 1964 wrote to memory of 1936	1964	vbc.exe	28
PID 1964 wrote to memory of 1936	1964	vbc.exe	28
PID 1576 wrote to memory of 1784	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	29
PID 1576 wrote to memory of 1784	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	29
PID 1576 wrote to memory of 1784	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	29
PID 1576 wrote to memory of 1784	1576	4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe	29

C:\Users\Admin\AppData\Local\Temp\4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe
"C:\Users\Admin\AppData\Local\Temp\4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /noconfig @"C:\Users\Admin\AppData\Local\Temp\pnwhro_y.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES31D.tmp" "C:\Users\Admin\AppData\Local\Temp\vbc31C.tmp"
    3⤵
    PID:1936
- C:\Users\Admin\AppData\Local\Temp\tmp1C5.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp1C5.tmp.exe" C:\Users\Admin\AppData\Local\Temp\4d7e3818fcaa4b55056d58e20420d10fe1d8e56fbd6059d0a716c877f73aaa5d.exe
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:1784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1576-2-0x0000000075A41000-0x0000000075A43000-memory.dmp

Filesize
8KB

Download
memory/1576-14-0x0000000001F60000-0x0000000001F61000-memory.dmp

Filesize
4KB

Download
memory/1784-17-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/1784-19-0x0000000000AE5000-0x0000000000AF6000-memory.dmp

Filesize
68KB

Download
memory/1964-18-0x0000000002110000-0x0000000002111000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing