349cd974c45c839a882884a1470b227aa29267b071cf6911e9cd29db97ff548e

General

Target

Yosdofwiqay.exe
Size

1.7MB
MD5

8b5aebbfdc88f95116a67d1fcdd90e38
SHA1

fe2c7ea71c400db803c70e11dd04f0b78d0d943f
SHA256

349cd974c45c839a882884a1470b227aa29267b071cf6911e9cd29db97ff548e
SHA512

4b0c479dbd94e0a727820861170f6c13a19d02dacc920bfa31da64804c465ffec7b8faf7a11c13a50e45b4689c987d9391a59944aa6d2bfdd718224a92abd59e
SSDEEP

24576:QCh4u2rfgkvtcEdE1022xUsnsziZvd4R0h2J5x3lse67gTzEzIcMDpHFfXj:ErZFNEArvHOOifkk1tXj

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	Yosdofwiqay.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	Yosdofwiqay.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fjmghbtx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Iaujbrruzq\\Fjmghbtx.exe\""	Yosdofwiqay.exe

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
31	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4824 set thread context of 2880	4824	Yosdofwiqay.exe	93

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4004	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1268	powershell.exe
1268	powershell.exe
2880	Yosdofwiqay.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1268	powershell.exe
Token: SeDebugPrivilege	4824	Yosdofwiqay.exe
Token: SeDebugPrivilege	2880	Yosdofwiqay.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 1268	4824	Yosdofwiqay.exe	84
PID 4824 wrote to memory of 1268	4824	Yosdofwiqay.exe	84
PID 4824 wrote to memory of 1268	4824	Yosdofwiqay.exe	84
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 4824 wrote to memory of 2880	4824	Yosdofwiqay.exe	93
PID 2880 wrote to memory of 4348	2880	Yosdofwiqay.exe	94
PID 2880 wrote to memory of 4348	2880	Yosdofwiqay.exe	94
PID 2880 wrote to memory of 4348	2880	Yosdofwiqay.exe	94
PID 4348 wrote to memory of 3848	4348	cmd.exe	96
PID 4348 wrote to memory of 3848	4348	cmd.exe	96
PID 4348 wrote to memory of 3848	4348	cmd.exe	96
PID 4348 wrote to memory of 4004	4348	cmd.exe	97
PID 4348 wrote to memory of 4004	4348	cmd.exe	97
PID 4348 wrote to memory of 4004	4348	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\Yosdofwiqay.exe
"C:\Users\Admin\AppData\Local\Temp\Yosdofwiqay.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4824
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1268
- C:\Users\Admin\AppData\Local\Temp\Yosdofwiqay.exe
  C:\Users\Admin\AppData\Local\Temp\Yosdofwiqay.exe
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Yosdofwiqay.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4348
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:3848
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1
      4⤵
      Runs ping.exe
      PID:4004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Yosdofwiqay.exe.log

Filesize
1KB

MD5
7e88081fcf716d85992bb3af3d9b6454

SHA1
2153780fbc71061b0102a7a7b665349e1013e250

SHA256
5ffb4a3ea94a6a53c4f88e2191c6fec5fd8a7336e367aa113fe8c12631e0c4d2

SHA512
ec606e14367ae221c04f213a61a6f797034495121198e4788e3afa4aa8db67bf59c5c5210a56afae5557158e8923b013b371b84c7d64303618c5b4c57a2224f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aorgxa2x.caq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1268-153-0x00000000063C0000-0x00000000063DA000-memory.dmp

Filesize
104KB

Download
memory/1268-154-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-137-0x0000000005090000-0x00000000056B8000-memory.dmp

Filesize
6.2MB

Download
memory/1268-138-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-139-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-140-0x0000000005730000-0x0000000005796000-memory.dmp

Filesize
408KB

Download
memory/1268-146-0x0000000005890000-0x00000000058F6000-memory.dmp

Filesize
408KB

Download
memory/1268-158-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-151-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

Filesize
120KB

Download
memory/1268-157-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-136-0x00000000028E0000-0x0000000002916000-memory.dmp

Filesize
216KB

Download
memory/1268-156-0x00000000029F0000-0x0000000002A00000-memory.dmp

Filesize
64KB

Download
memory/1268-152-0x0000000007710000-0x0000000007D8A000-memory.dmp

Filesize
6.5MB

Download
memory/2880-163-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2880-166-0x0000000005540000-0x0000000005590000-memory.dmp

Filesize
320KB

Download
memory/2880-167-0x0000000004EC0000-0x0000000004ED0000-memory.dmp

Filesize
64KB

Download
memory/2880-168-0x0000000005630000-0x00000000056C2000-memory.dmp

Filesize
584KB

Download
memory/2880-169-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/4824-133-0x00000000008D0000-0x0000000000A92000-memory.dmp

Filesize
1.8MB

Download
memory/4824-155-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download
memory/4824-135-0x0000000005870000-0x0000000005892000-memory.dmp

Filesize
136KB

Download
memory/4824-134-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing