wshrat | 8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8

General

Target

8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe
Size

1.9MB
MD5

af22e48d98420836fd37c916428f3294
SHA1

84b90d52157094799812b08087294e674b10b082
SHA256

8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8
SHA512

1575508adaf49dfc00bc65079583284d15b2971f9153fdc4ea94f5b1150449794390db1e02b222d7a6a1f63c3335f74385da22668e0ec596bf0520ed1fbebbb5
SSDEEP

49152:FTfq9T3HTultPtuceoswmWj4wLCc3jWicxv:dfq9T3CltGRhQV3

Score

10^/10

wshrat trojan

Malware Config

Signatures

WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

WSHRAT payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000700000002312b-10.dat	family_wshrat
behavioral2/files/0x000a000000023221-14.dat	family_wshrat

Blocklisted process makes network request 10 IoCs

flow	pid	Process
43	2336	wscript.exe
47	2336	wscript.exe
58	4768	wscript.exe
59	4768	wscript.exe
61	4768	wscript.exe
62	4768	wscript.exe
83	4768	wscript.exe
87	4768	wscript.exe
88	4768	wscript.exe
93	4768	wscript.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-1-5-21-3027552071-446050021-1254071215-1000\Control Panel\International\Geo\Nation	wscript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
60	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 372 set thread context of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89

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

System Information Discovery
T1082

Script User-Agent 4 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	47	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	58	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	59	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	43	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe
372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 1648	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	88
PID 372 wrote to memory of 1648	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	88
PID 372 wrote to memory of 1648	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	88
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 372 wrote to memory of 4276	372	8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe	89
PID 4276 wrote to memory of 2336	4276	caspol.exe	90
PID 4276 wrote to memory of 2336	4276	caspol.exe	90
PID 4276 wrote to memory of 2336	4276	caspol.exe	90
PID 2336 wrote to memory of 4768	2336	wscript.exe	98
PID 2336 wrote to memory of 4768	2336	wscript.exe	98
PID 2336 wrote to memory of 4768	2336	wscript.exe	98

C:\Users\Admin\AppData\Local\Temp\8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe
"C:\Users\Admin\AppData\Local\Temp\8e53746797bbecbef642259c5403297f4d3fa0bd1b4e6e3cd637011027e5ebc8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
  2⤵
  PID:1648
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4276
- - C:\Windows\SysWOW64\wscript.exe
    "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\vVqvy.vbs"
    3⤵
    - Blocklisted process makes network request
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2336
  - - C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Local\Temp\vVqvy.vbs"
      4⤵
      Blocklisted process makes network request
      PID:4768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\MBSMWSRL\json[1].json

Filesize
323B

MD5
0c17abb0ed055fecf0c48bb6e46eb4eb

SHA1
a692730c8ec7353c31b94a888f359edb54aaa4c8

SHA256
f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

SHA512
645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

Download Submit
C:\Users\Admin\AppData\Local\Temp\vVqvy.vbs

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

Download Submit
C:\Users\Admin\AppData\Roaming\vVqvy.vbs

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

Download Submit
memory/372-0-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/372-1-0x0000000000B20000-0x0000000000D18000-memory.dmp

Filesize
2.0MB

Download
memory/372-2-0x0000000005610000-0x000000000561A000-memory.dmp

Filesize
40KB

Download
memory/372-3-0x0000000005790000-0x00000000057A0000-memory.dmp

Filesize
64KB

Download
memory/372-7-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/4276-4-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/4276-6-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/4276-11-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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