8adf5a91aa7f509cc0cd0c220dddf4e1be235e72fdd14c33e0f6722b8aa19795

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2025, 00:50

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General

Target

PureLogStealer-0xb.exe
Size

193KB
MD5

98609581725d9cf7f5200dbb02266cd6
SHA1

5f8a127fb69172947c6212b3a466279794b702a4
SHA256

01b57b7ab116a353b5d7d778b62c1a99f7f9f10e6af3a524aa13b9e3a588d751
SHA512

1cfa89386dd206ba5be5a981f4942deb76b71f7dcc5a09f9cf605e87a0128983bce1a8d22300e08e0751321a47c6252575d93fa9d81e847944b2c9fc5aaa2d0d
SSDEEP

6144:pS4OgfnRtcCUsnzUCpM69/KImQi/6ebl:srg/jcy

Score

10^/10

defense_evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\""	PureLogStealer-0xb.exe

Adds Run key to start application 2 TTPs 13 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_2 = "taskhost.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_3 = "windowsx-c.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_4 = "System.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_5 = "_default64.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_6 = "native.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsInstaller = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\" -startup"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSEdgeUpdateX = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\""	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System3264Wow = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\" --init"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\OneDrive10293 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\" /setup"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\WINDOWS = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PureLogStealer-0xb.exe\" --wininit"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_7 = "ux-cryptor.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_8 = "crypt0rsx.exe"	PureLogStealer-0xb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_1 = "AWindowsService.exe"	PureLogStealer-0xb.exe

Drops desktop.ini file(s) 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Desktop\desktop.ini	attrib.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	attrib.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	attrib.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	attrib.exe

Hide Artifacts: Hidden Files and Directories 1 TTPs 6 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4908	cmd.exe
4928	cmd.exe
4924	cmd.exe
4976	cmd.exe
4892	cmd.exe
5076	cmd.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4832	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2948	PureLogStealer-0xb.exe
2948	PureLogStealer-0xb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	PureLogStealer-0xb.exe
Token: SeDebugPrivilege	4832	taskkill.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 6088 wrote to memory of 1176	6088	cmd.exe	99
PID 6088 wrote to memory of 1176	6088	cmd.exe	99
PID 4552 wrote to memory of 4348	4552	cmd.exe	100
PID 4552 wrote to memory of 4348	4552	cmd.exe	100
PID 2040 wrote to memory of 5184	2040	cmd.exe	101
PID 2040 wrote to memory of 5184	2040	cmd.exe	101
PID 888 wrote to memory of 4168	888	cmd.exe	103
PID 888 wrote to memory of 4168	888	cmd.exe	103
PID 404 wrote to memory of 4404	404	cmd.exe	102
PID 404 wrote to memory of 4404	404	cmd.exe	102
PID 2948 wrote to memory of 4924	2948	PureLogStealer-0xb.exe	119
PID 2948 wrote to memory of 4924	2948	PureLogStealer-0xb.exe	119
PID 2948 wrote to memory of 4928	2948	PureLogStealer-0xb.exe	120
PID 2948 wrote to memory of 4928	2948	PureLogStealer-0xb.exe	120
PID 2948 wrote to memory of 4908	2948	PureLogStealer-0xb.exe	121
PID 2948 wrote to memory of 4908	2948	PureLogStealer-0xb.exe	121
PID 2948 wrote to memory of 5076	2948	PureLogStealer-0xb.exe	122
PID 2948 wrote to memory of 5076	2948	PureLogStealer-0xb.exe	122
PID 2948 wrote to memory of 4892	2948	PureLogStealer-0xb.exe	123
PID 2948 wrote to memory of 4892	2948	PureLogStealer-0xb.exe	123
PID 2948 wrote to memory of 4976	2948	PureLogStealer-0xb.exe	124
PID 2948 wrote to memory of 4976	2948	PureLogStealer-0xb.exe	124
PID 2948 wrote to memory of 4832	2948	PureLogStealer-0xb.exe	125
PID 2948 wrote to memory of 4832	2948	PureLogStealer-0xb.exe	125
PID 4908 wrote to memory of 2124	4908	cmd.exe	134
PID 4908 wrote to memory of 2124	4908	cmd.exe	134
PID 4924 wrote to memory of 1836	4924	cmd.exe	135
PID 4924 wrote to memory of 1836	4924	cmd.exe	135
PID 4928 wrote to memory of 4020	4928	cmd.exe	136
PID 4928 wrote to memory of 4020	4928	cmd.exe	136
PID 5076 wrote to memory of 5412	5076	cmd.exe	137
PID 5076 wrote to memory of 5412	5076	cmd.exe	137
PID 4976 wrote to memory of 5952	4976	cmd.exe	139
PID 4976 wrote to memory of 5952	4976	cmd.exe	139
PID 4892 wrote to memory of 5036	4892	cmd.exe	140
PID 4892 wrote to memory of 5036	4892	cmd.exe	140
PID 4924 wrote to memory of 3996	4924	cmd.exe	141
PID 4924 wrote to memory of 3996	4924	cmd.exe	141
PID 4908 wrote to memory of 2244	4908	cmd.exe	142
PID 4908 wrote to memory of 2244	4908	cmd.exe	142
PID 5076 wrote to memory of 2248	5076	cmd.exe	143
PID 5076 wrote to memory of 2248	5076	cmd.exe	143
PID 4976 wrote to memory of 3472	4976	cmd.exe	144
PID 4976 wrote to memory of 3472	4976	cmd.exe	144
PID 4892 wrote to memory of 868	4892	cmd.exe	145
PID 4892 wrote to memory of 868	4892	cmd.exe	145
PID 4928 wrote to memory of 2700	4928	cmd.exe	146
PID 4928 wrote to memory of 2700	4928	cmd.exe	146

Views/modifies file attributes 1 TTPs 12 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1836	attrib.exe
5952	attrib.exe
2248	attrib.exe
3472	attrib.exe
2700	attrib.exe
4020	attrib.exe
5412	attrib.exe
5036	attrib.exe
2244	attrib.exe
3996	attrib.exe
868	attrib.exe
2124	attrib.exe

C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
"C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c F: & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4924
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Views/modifies file attributes
    PID:1836
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:3996
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\desktop"&attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4928
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:4020
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:2700
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%systemdrive%\Users\Public\Desktop"&attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:2124
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:2244
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\downloads"&attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:5412
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:2248
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\documents"&attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4892
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:5036
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:868
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%"&attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted by the Legion hacker group! Telegram for contact: @xexeza 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4976
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Views/modifies file attributes
    PID:5952
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-Locker.txt
    3⤵
    - Views/modifies file attributes
    PID:3472
- C:\Windows\SYSTEM32\taskkill.exe
  taskkill.exe /im Explorer.exe /f
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4832

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  2⤵
  PID:4348

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe" -startup
1⤵
- Suspicious use of WriteProcessMemory
PID:888
- C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe -startup
  2⤵
  PID:4168

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe" --init
1⤵
- Suspicious use of WriteProcessMemory
PID:6088
- C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe --init
  2⤵
  PID:1176

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe" /setup
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe /setup
  2⤵
  PID:5184

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe" --wininit
1⤵
- Suspicious use of WriteProcessMemory
PID:404
- C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe
  C:\Users\Admin\AppData\Local\Temp\PureLogStealer-0xb.exe --wininit
  2⤵
  PID:4404

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c AWindowsService.exe
1⤵
PID:4852

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c taskhost.exe
1⤵
PID:4864

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c windowsx-c.exe
1⤵
PID:4876

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c System.exe
1⤵
PID:5032

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c _default64.exe
1⤵
PID:4808

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c native.exe
1⤵
PID:4968

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ux-cryptor.exe
1⤵
PID:5596

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c crypt0rsx.exe
1⤵
PID:4688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\PureLogStealer-0xb.exe.log

Filesize
1KB

MD5
2d2a235f1b0f4b608c5910673735494b

SHA1
23a63f6529bfdf917886ab8347092238db0423a0

SHA256
c897436c82fda9abf08b29fe05c42f4e59900116bbaf8bfd5b85ef3c97ab7884

SHA512
10684245497f1a115142d49b85000075eb36f360b59a0501e2f352c9f1d767c447c6c44c53a3fb3699402a15a8017bdbd2edd72d8599fdd4772e9e7cb67f3086

Download Submit
C:\Users\Public\Desktop\info-Locker.txt

Filesize
101B

MD5
13c5a9e07545a04295bc9fb28cf3168b

SHA1
b0085192a9007f9235c1d99beea41dbe599e32d1

SHA256
e9527645426a1ce8f4befb9690747ccda0431b09ac2b003d0704b1d7e4c1b304

SHA512
2801993ca230f3cf4e8da9500f39a4604b19c5e78c96cf7ccf8da49e51d94278430b4701f0fdf8206df484b1ee9326d424035923fe7486b20a68e2f07c9f052e

Download Submit
memory/2948-0-0x00007FFC3A653000-0x00007FFC3A655000-memory.dmp

Filesize
8KB

Download
memory/2948-1-0x0000000000830000-0x0000000000866000-memory.dmp

Filesize
216KB

Download
memory/2948-2-0x00007FFC3A650000-0x00007FFC3B111000-memory.dmp

Filesize
10.8MB

Download
memory/2948-24-0x00007FFC3A653000-0x00007FFC3A655000-memory.dmp

Filesize
8KB

Download
memory/2948-25-0x00007FFC3A650000-0x00007FFC3B111000-memory.dmp

Filesize
10.8MB

Download