wshrat | bc0078eddf96041937071aa21a514385275768fd1efef78196c73df4efd76b6d

General

Target

14080220.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
behavioral1/files/0x000e00000001224d-37.dat	family_wshrat
behavioral1/files/0x0038000000015e6c-75.dat	family_wshrat

Blocklisted process makes network request 10 IoCs

flow	pid	Process
6	1144	wscript.exe
7	1144	wscript.exe
10	1144	wscript.exe
11	1452	wscript.exe
12	1452	wscript.exe
15	1452	wscript.exe
16	1452	wscript.exe
17	1452	wscript.exe
20	1452	wscript.exe
21	1452	wscript.exe

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
2512	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2544	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
14	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2544 set thread context of 2700	2544	BIN.exe	31

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 4 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	wscript.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	wscript.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	wscript.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	wscript.exe

Script User-Agent 4 IoCs

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

description	flow	ioc
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	11	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	12	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	14080220.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2544	2884	14080220.exe	27
PID 2884 wrote to memory of 2544	2884	14080220.exe	27
PID 2884 wrote to memory of 2544	2884	14080220.exe	27
PID 2884 wrote to memory of 2544	2884	14080220.exe	27
PID 2884 wrote to memory of 2512	2884	14080220.exe	28
PID 2884 wrote to memory of 2512	2884	14080220.exe	28
PID 2884 wrote to memory of 2512	2884	14080220.exe	28
PID 2512 wrote to memory of 2616	2512	cmd.exe	30
PID 2512 wrote to memory of 2616	2512	cmd.exe	30
PID 2512 wrote to memory of 2616	2512	cmd.exe	30
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2544 wrote to memory of 2700	2544	BIN.exe	31
PID 2700 wrote to memory of 1144	2700	caspol.exe	32
PID 2700 wrote to memory of 1144	2700	caspol.exe	32
PID 2700 wrote to memory of 1144	2700	caspol.exe	32
PID 2700 wrote to memory of 1144	2700	caspol.exe	32
PID 1144 wrote to memory of 1452	1144	wscript.exe	34
PID 1144 wrote to memory of 1452	1144	wscript.exe	34
PID 1144 wrote to memory of 1452	1144	wscript.exe	34
PID 1144 wrote to memory of 1452	1144	wscript.exe	34

C:\Users\Admin\AppData\Local\Temp\14080220.exe
"C:\Users\Admin\AppData\Local\Temp\14080220.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- 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:2544
- - 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:2700
  - - C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\vVqvy.vbs"
      4⤵
      Blocklisted process makes network request
      Suspicious use of WriteProcessMemory
      PID:1144
    - - 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
        Modifies system certificate store
        
        PID:1452
- 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\14080220.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\system32\choice.exe
    choice /C Y /N /D Y /T 1
    3⤵
    PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

System Information Discovery

1

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\Temp\CabDBC1.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarDC02.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

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\vVqvy.vbs

Filesize
180KB

MD5
9bcc1d31eae798a11b1d50f46b1de92c

SHA1
8bc898b80ead2433ac20eaa9936d2e40ea1db01e

SHA256
cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

SHA512
b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

Download Submit
memory/2544-31-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/2544-19-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/2544-13-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/2544-14-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/2544-15-0x0000000005020000-0x0000000005218000-memory.dmp

Filesize
2.0MB

Download
memory/2544-16-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/2544-17-0x0000000004E20000-0x000000000501A000-memory.dmp

Filesize
2.0MB

Download
memory/2544-18-0x00000000025E0000-0x00000000025EA000-memory.dmp

Filesize
40KB

Download
memory/2700-24-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-35-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-22-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-38-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-26-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-29-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-20-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-32-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-34-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2884-0-0x000000013F400000-0x000000013F40A000-memory.dmp

Filesize
40KB

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memory/2884-4-0x000000001AD00000-0x000000001AD80000-memory.dmp

Filesize
512KB

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memory/2884-12-0x000007FEF53A0000-0x000007FEF5D8C000-memory.dmp

Filesize
9.9MB

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memory/2884-3-0x000007FEF53A0000-0x000007FEF5D8C000-memory.dmp

Filesize
9.9MB

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memory/2884-2-0x000000001AD00000-0x000000001AD80000-memory.dmp

Filesize
512KB

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memory/2884-1-0x000007FEF53A0000-0x000007FEF5D8C000-memory.dmp

Filesize
9.9MB

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