wshrat | 420a2c200fde9d62bc040616edd62949aec77d6e39bf864602f584792fc8e867

General

Target

140802200220531MES_S Quote.exe
Size

12KB
MD5

1eef9f1c50a5362d4ff555b6cc5bc5df
SHA1

caa4099e942052634cea6fc2866d9652f09cf546
SHA256

420a2c200fde9d62bc040616edd62949aec77d6e39bf864602f584792fc8e867
SHA512

56c41cf987ba22ddac2cac9ef10e3dbadf2abd99ca0ed3510883d532cc5d1625ce50426308b8e91bd20645e3812074b31b977976646d751621dd18a92b877218
SSDEEP

192:nlv0pHLdF1bvM+A4tLHwpTxHR95w0J1dZdckF+syKtieOv:d+Lxbk+A4tTyFSvsyuDO

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/0x0007000000023091-34.dat	family_wshrat
behavioral2/files/0x000600000002309a-37.dat	family_wshrat

Blocklisted process makes network request 10 IoCs

flow	pid	Process
33	1712	wscript.exe
35	1712	wscript.exe
41	3556	wscript.exe
42	3556	wscript.exe
44	3556	wscript.exe
45	3556	wscript.exe
51	3556	wscript.exe
52	3556	wscript.exe
53	3556	wscript.exe
61	3556	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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	140802200220531MES_S Quote.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
3712	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
43	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3712 set thread context of 1952	3712	BIN.exe	87

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	41	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	33	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	35	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4192	140802200220531MES_S Quote.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 3712	4192	140802200220531MES_S Quote.exe	83
PID 4192 wrote to memory of 3712	4192	140802200220531MES_S Quote.exe	83
PID 4192 wrote to memory of 3712	4192	140802200220531MES_S Quote.exe	83
PID 4192 wrote to memory of 4920	4192	140802200220531MES_S Quote.exe	84
PID 4192 wrote to memory of 4920	4192	140802200220531MES_S Quote.exe	84
PID 4920 wrote to memory of 264	4920	cmd.exe	86
PID 4920 wrote to memory of 264	4920	cmd.exe	86
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 3712 wrote to memory of 1952	3712	BIN.exe	87
PID 1952 wrote to memory of 1712	1952	caspol.exe	93
PID 1952 wrote to memory of 1712	1952	caspol.exe	93
PID 1952 wrote to memory of 1712	1952	caspol.exe	93
PID 1712 wrote to memory of 3556	1712	wscript.exe	97
PID 1712 wrote to memory of 3556	1712	wscript.exe	97
PID 1712 wrote to memory of 3556	1712	wscript.exe	97

C:\Users\Admin\AppData\Local\Temp\140802200220531MES_S Quote.exe
"C:\Users\Admin\AppData\Local\Temp\140802200220531MES_S Quote.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4192
- 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 use of WriteProcessMemory
  PID:3712
- - 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:1952
  - - 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:1712
    - - 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:3556
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 1 & Del "C:\Users\Admin\AppData\Local\Temp\140802200220531MES_S Quote.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\system32\choice.exe
    choice /C Y /N /D Y /T 1
    3⤵
    PID:264

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\OSZCC7QI\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/1952-25-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1952-33-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/1952-31-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/1952-27-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3712-21-0x0000000005220000-0x000000000541A000-memory.dmp

Filesize
2.0MB

Download
memory/3712-26-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/3712-16-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3712-22-0x0000000005080000-0x000000000508A000-memory.dmp

Filesize
40KB

Download
memory/3712-23-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3712-24-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/3712-19-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/3712-20-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/3712-18-0x0000000005430000-0x0000000005628000-memory.dmp

Filesize
2.0MB

Download
memory/3712-29-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3712-17-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4192-0-0x000001F6ED3C0000-0x000001F6ED3CA000-memory.dmp

Filesize
40KB

Download
memory/4192-15-0x00007FFE3B400000-0x00007FFE3BEC1000-memory.dmp

Filesize
10.8MB

Download
memory/4192-2-0x000001F6ED780000-0x000001F6ED790000-memory.dmp

Filesize
64KB

Download
memory/4192-1-0x00007FFE3B400000-0x00007FFE3BEC1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing