wshrat | bb1a60d48e67a57b363bc312e01f4d91a7dae7e4a11653156e554d468578e8f2

General

Target

263d8628ff6e9c99318da99bb42007f4.exe
Size

2.0MB
MD5

263d8628ff6e9c99318da99bb42007f4
SHA1

c0450285843855e54b2b5aa7ee8d1a2f524218e9
SHA256

bb1a60d48e67a57b363bc312e01f4d91a7dae7e4a11653156e554d468578e8f2
SHA512

93d6a334ea62a876bab4c2c904b515fae2de919f9d5813123fbf38a02e76f02f026528d8db031e01baa525edad242683a689418eab8d3f8aab489d55c45b8114
SSDEEP

1536:waXjwDPE6yzTBMfT9/8n+NwRw7ySsgWNybmXfaKHFjyRcf7tZ4G5tJJmmrvf/Fco:NYPFyzTBMfw+N/Zs/N4ovsWZ93co

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/0x0006000000023252-10.dat	family_wshrat
behavioral2/files/0x00060000000006df-13.dat	family_wshrat

Blocklisted process makes network request 11 IoCs

flow	pid	Process
22	4848	wscript.exe
23	4848	wscript.exe
26	3916	wscript.exe
27	3916	wscript.exe
30	3916	wscript.exe
31	3916	wscript.exe
59	3916	wscript.exe
60	3916	wscript.exe
61	3916	wscript.exe
62	3916	wscript.exe
67	3916	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-1-5-21-1141987721-3945596982-3297311814-1000\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
29	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82

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	22	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	23	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	26	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	27	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1148	263d8628ff6e9c99318da99bb42007f4.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1148 wrote to memory of 1644	1148	263d8628ff6e9c99318da99bb42007f4.exe	82
PID 1644 wrote to memory of 4848	1644	Caspol.exe	84
PID 1644 wrote to memory of 4848	1644	Caspol.exe	84
PID 1644 wrote to memory of 4848	1644	Caspol.exe	84
PID 4848 wrote to memory of 3916	4848	wscript.exe	88
PID 4848 wrote to memory of 3916	4848	wscript.exe	88
PID 4848 wrote to memory of 3916	4848	wscript.exe	88

C:\Users\Admin\AppData\Local\Temp\263d8628ff6e9c99318da99bb42007f4.exe
"C:\Users\Admin\AppData\Local\Temp\263d8628ff6e9c99318da99bb42007f4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148
- 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:1644
- - C:\Windows\SysWOW64\wscript.exe
    "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\PmdRD.vbs"
    3⤵
    - Blocklisted process makes network request
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4848
  - - C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Local\Temp\PmdRD.vbs"
      4⤵
      Blocklisted process makes network request
      PID:3916

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\YF4PBZEL\json[1].json

Filesize
323B

MD5
149c2823b7eadbfb0a82388a2ab9494f

SHA1
415fe979ce5fd0064d2557a48745a3ed1a3fbf9c

SHA256
06fa5d4e7fbfb1efdc19baa034601a894b21cf729785732853ced4bb40aca869

SHA512
f8fb6b7c93c4ab37f6e250ba8ac5c82f6e17fe52156cab81d34e91107d1da716b744bfe02ee0306497a3876d5352af789a1e66dab10e11e22065bac3050475fe

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

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

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

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

Download Submit
memory/1148-0-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1148-1-0x0000000000290000-0x0000000000498000-memory.dmp

Filesize
2.0MB

Download
memory/1148-2-0x0000000002840000-0x0000000002852000-memory.dmp

Filesize
72KB

Download
memory/1148-5-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1644-3-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1644-6-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/1644-9-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download

Analysis

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