wshrat | bb1a60d48e67a57b363bc312e01f4d91a7dae7e4a11653156e554d468578e8f2

Analysis

max time kernel
154s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2023, 13:11

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General

Target
263d8628ff6e9c99318da99bb42007f4.exe
Size 2.0MB
Sample231012-qfd4esdd98
SHA256 bb1a60d48e67a57b363bc312e01f4d91a7dae7e4a11653156e554d468578e8f2
MD5 263d8628ff6e9c99318da99bb42007f4
SHA1 c0450285843855e54b2b5aa7ee8d1a2f524218e9
SHA512 93d6a334ea62a876bab4c2c904b515fae2de919f9d5813123fbf38a02e76f02f026528d8db031e01baa525edad242683a689418eab8d3f8aab489d55c45b8114
SSDEEP 1536:waXjwDPE6yzTBMfT9/8n+NwRw7ySsgWNybmXfaKHFjyRcf7tZ4G5tJJmmrvf/Fco:NYPFyzTBMfw+N/Zs/N4ovsWZ93co
MD5 SHA1 SHA512 SSDEEP

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/0x000d00000001e58d-10.dat	family_wshrat
behavioral2/files/0x000b000000023125-13.dat	family_wshrat

Blocklisted process makes network request 11 IoCs

flow	pid	Process
10	2224	wscript.exe
14	2224	wscript.exe
20	3420	wscript.exe
21	3420	wscript.exe
23	3420	wscript.exe
24	3420	wscript.exe
45	3420	wscript.exe
46	3420	wscript.exe
52	3420	wscript.exe
53	3420	wscript.exe
58	3420	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-1-5-21-2890696111-2332180956-3312704074-1000\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
22	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3264 set thread context of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83

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	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	21	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	10	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3264	263d8628ff6e9c99318da99bb42007f4.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 3264 wrote to memory of 4428	3264	263d8628ff6e9c99318da99bb42007f4.exe	83
PID 4428 wrote to memory of 2224	4428	Caspol.exe	84
PID 4428 wrote to memory of 2224	4428	Caspol.exe	84
PID 4428 wrote to memory of 2224	4428	Caspol.exe	84
PID 2224 wrote to memory of 3420	2224	wscript.exe	87
PID 2224 wrote to memory of 3420	2224	wscript.exe	87
PID 2224 wrote to memory of 3420	2224	wscript.exe	87

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:3264
- 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:4428
- - 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:2224
  - - 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:3420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

json[1].json

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\XE9C1B9R\json[1].json
Size 323B
SHA256 f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0
MD5 0c17abb0ed055fecf0c48bb6e46eb4eb
SHA1 a692730c8ec7353c31b94a888f359edb54aaa4c8
SHA512 645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3
MD5 SHA1 SHA512

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PmdRD.vbs

Path C:\Users\Admin\AppData\Local\Temp\PmdRD.vbs
Size 180KB
SHA256 cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b
MD5 9bcc1d31eae798a11b1d50f46b1de92c
SHA1 8bc898b80ead2433ac20eaa9936d2e40ea1db01e
SHA512 b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d
SSDEEP 3072:EAg8xSzAmshISeWJQ0bamQvEz7ZAbURC3eGK/6xbIpklgVDSxGfmuZ1D:EAg8xS0mshISeWmM6iRC3eGKoAklgF28
MD5 SHA1 SHA512 SSDEEP

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PmdRD.vbs

Path C:\Users\Admin\AppData\Roaming\PmdRD.vbs
Size 180KB
SHA256 cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b
MD5 9bcc1d31eae798a11b1d50f46b1de92c
SHA1 8bc898b80ead2433ac20eaa9936d2e40ea1db01e
SHA512 b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d
SSDEEP 3072:EAg8xSzAmshISeWJQ0bamQvEz7ZAbURC3eGK/6xbIpklgVDSxGfmuZ1D:EAg8xS0mshISeWmM6iRC3eGKoAklgF28
MD5 SHA1 SHA512 SSDEEP

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memory/3264-0-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/3264-1-0x0000000000570000-0x0000000000778000-memory.dmp

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memory/3264-2-0x0000000001220000-0x0000000001232000-memory.dmp

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memory/3264-5-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/4428-3-0x0000000000400000-0x000000000048A000-memory.dmp

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memory/4428-6-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/4428-9-0x0000000075260000-0x0000000075A10000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads