wshrat | 8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca

General

Target

8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe
Size

168KB
MD5

9ba2229027f01e7ae4fd53c291a2fc06
SHA1

381e20e13c6dbf5bd287cc616b7748c09c419c3e
SHA256

8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca
SHA512

98402fe6ed1c21d3cdde6f4fde79c2b540bc85773f00f811e545f77b740217a15baaa10ef56de22be4eb4b057a73af52267ec45043efedaf1f5e43d2d906f694
SSDEEP

3072:pDKW1LgppLRHMY0TBfJvjcTp5Xqy31QinAlSVsr:pDKW1Lgbdl0TBBvjc/jQinAk+

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/0x000800000002325b-37.dat	family_wshrat
behavioral2/files/0x0010000000023263-40.dat	family_wshrat

Blocklisted process makes network request 10 IoCs

flow	pid	Process
58	460	wscript.exe
59	460	wscript.exe
67	4084	wscript.exe
68	4084	wscript.exe
72	4084	wscript.exe
73	4084	wscript.exe
75	4084	wscript.exe
81	4084	wscript.exe
89	4084	wscript.exe
90	4084	wscript.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	BIN.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
71	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 4388	2916	BIN.exe	97

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	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	67	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	68	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2916	BIN.exe
2916	BIN.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe
Token: SeDebugPrivilege	2916	BIN.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 2916	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	93
PID 836 wrote to memory of 2916	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	93
PID 836 wrote to memory of 2916	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	93
PID 836 wrote to memory of 4316	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	94
PID 836 wrote to memory of 4316	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	94
PID 836 wrote to memory of 4316	836	8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe	94
PID 2916 wrote to memory of 3684	2916	BIN.exe	96
PID 2916 wrote to memory of 3684	2916	BIN.exe	96
PID 2916 wrote to memory of 3684	2916	BIN.exe	96
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 2916 wrote to memory of 4388	2916	BIN.exe	97
PID 4316 wrote to memory of 3232	4316	cmd.exe	99
PID 4316 wrote to memory of 3232	4316	cmd.exe	99
PID 4316 wrote to memory of 3232	4316	cmd.exe	99
PID 4388 wrote to memory of 460	4388	caspol.exe	101
PID 4388 wrote to memory of 460	4388	caspol.exe	101
PID 4388 wrote to memory of 460	4388	caspol.exe	101
PID 460 wrote to memory of 4084	460	wscript.exe	103
PID 460 wrote to memory of 4084	460	wscript.exe	103
PID 460 wrote to memory of 4084	460	wscript.exe	103

C:\Users\Admin\AppData\Local\Temp\8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe
"C:\Users\Admin\AppData\Local\Temp\8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\BIN.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\BIN.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
    3⤵
    PID:3684
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4388
  - - C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\vVqvy.vbs"
      4⤵
      Blocklisted process makes network request
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:460
    - - C:\Windows\SysWOW64\wscript.exe
        
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Local\Temp\vVqvy.vbs"
        5⤵
        Blocklisted process makes network request
        
        PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\8dd2823b8343b3b64877355cb6b2b9f88d06b4dd586641fde317c592259b99ca.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4316
- - C:\Windows\SysWOW64\choice.exe
    choice /C Y /N /D Y /T 1
    3⤵
    PID:3232

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\I7F72U1R\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\Microsoft\Windows\Start Menu\BIN.exe

Filesize
2.1MB

MD5
066dbf69cbfa16c46a2142a257c95f1d

SHA1
0300eb287c3e29642877772c348c6b683b86a305

SHA256
a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

SHA512
c1874bf3d3c6c56168eec1b18242af7562696e9c556ab7612b4c592b78b76286ce80a44cd55222df39f4e85e27cdf19b084dfd0a24127a73615f04545925da7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\BIN.exe

Filesize
2.1MB

MD5
066dbf69cbfa16c46a2142a257c95f1d

SHA1
0300eb287c3e29642877772c348c6b683b86a305

SHA256
a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

SHA512
c1874bf3d3c6c56168eec1b18242af7562696e9c556ab7612b4c592b78b76286ce80a44cd55222df39f4e85e27cdf19b084dfd0a24127a73615f04545925da7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\BIN.exe

Filesize
2.1MB

MD5
066dbf69cbfa16c46a2142a257c95f1d

SHA1
0300eb287c3e29642877772c348c6b683b86a305

SHA256
a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

SHA512
c1874bf3d3c6c56168eec1b18242af7562696e9c556ab7612b4c592b78b76286ce80a44cd55222df39f4e85e27cdf19b084dfd0a24127a73615f04545925da7a

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

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

Download Submit
memory/836-4-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/836-7-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download
memory/836-8-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download
memory/836-9-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download
memory/836-6-0x0000000004AA0000-0x0000000004AB4000-memory.dmp

Filesize
80KB

Download
memory/836-5-0x0000000004AD0000-0x0000000005074000-memory.dmp

Filesize
5.6MB

Download
memory/836-27-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/836-3-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download
memory/836-0-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/836-2-0x0000000002240000-0x0000000002254000-memory.dmp

Filesize
80KB

Download
memory/836-1-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download
memory/2916-22-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/2916-26-0x0000000002B70000-0x0000000002B80000-memory.dmp

Filesize
64KB

Download
memory/2916-28-0x0000000002AE0000-0x0000000002AEA000-memory.dmp

Filesize
40KB

Download
memory/2916-32-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/2916-23-0x0000000005000000-0x00000000051FA000-memory.dmp

Filesize
2.0MB

Download
memory/2916-25-0x0000000002B70000-0x0000000002B80000-memory.dmp

Filesize
64KB

Download
memory/2916-21-0x0000000005200000-0x00000000053F8000-memory.dmp

Filesize
2.0MB

Download
memory/4388-29-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/4388-31-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4388-34-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4388-36-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing