purelogstealer | 914026a3a2ae151be05a903844b0f0b5abfc493101460ea044b51c458b4ce34c

Analysis

max time kernel
143s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 01:28

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General

Target

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Size

976KB
MD5

902f14b6f32cc40a82d6a0f2c41208ec
SHA1

c01e5bc3e9dbb84a5b36841045055999fc0a16cf
SHA256

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa
SHA512

d55e184309e122ffbe3097bfb64b3e23829228cd16030dca5856bfa1725bc60c2da04bf04c8919ca658ca4b7b03e4be6e6bc9240b5816903609969213be2f97c
SSDEEP

24576:1Ibj07xMVrpydHnnDfiDw8PZIykCu3oxmv2GX:1+ukYxDqnZTlns2

Score

10^/10

purelogstealer discovery persistence stealer

Malware Config

Signatures

PureLog Stealer
PureLog Stealer is an infostealer written in C#.
stealer purelogstealer

PureLog Stealer payload 2 IoCs

resource	yara_rule
behavioral2/memory/3744-1-0x0000000000920000-0x0000000000A1A000-memory.dmp	family_purelog_stealer
behavioral2/files/0x00070000000234e7-1097.dat	family_purelog_stealer

Suspicious use of NtCreateUserProcessOtherParentProcess 3 IoCs

description	pid	Process	procid_target
PID 3744 created 3516	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	56
PID 2432 created 3516	2432	cpjdtfk.exe	56
PID 3840 created 3516	3840	cpjdtfk.exe	56

Executes dropped EXE 4 IoCs

pid	Process
2432	cpjdtfk.exe
3896	cpjdtfk.exe
3840	cpjdtfk.exe
5464	cpjdtfk.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\afasdfga = "C:\\Users\\Admin\\AppData\\Roaming\\afasdfga.exe"	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3744 set thread context of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 2432 set thread context of 3896	2432	cpjdtfk.exe	107
PID 3840 set thread context of 5464	3840	cpjdtfk.exe	110

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpjdtfk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpjdtfk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpjdtfk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpjdtfk.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
2432	cpjdtfk.exe
3840	cpjdtfk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Token: SeDebugPrivilege	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Token: SeDebugPrivilege	2432	cpjdtfk.exe
Token: SeDebugPrivilege	2432	cpjdtfk.exe
Token: SeDebugPrivilege	3840	cpjdtfk.exe
Token: SeDebugPrivilege	3840	cpjdtfk.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 3744 wrote to memory of 4980	3744	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	94
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 2432 wrote to memory of 3896	2432	cpjdtfk.exe	107
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110
PID 3840 wrote to memory of 5464	3840	cpjdtfk.exe	110

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3516
- C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
  "C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3744
- C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
  "C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4980
- C:\ProgramData\qthummr\cpjdtfk.exe
  "C:\ProgramData\qthummr\cpjdtfk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\ProgramData\qthummr\cpjdtfk.exe
  "C:\ProgramData\qthummr\cpjdtfk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5464

C:\ProgramData\qthummr\cpjdtfk.exe
C:\ProgramData\qthummr\cpjdtfk.exe
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432

C:\ProgramData\qthummr\cpjdtfk.exe
C:\ProgramData\qthummr\cpjdtfk.exe
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3840

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\qthummr\cpjdtfk.exe

Filesize
976KB

MD5
902f14b6f32cc40a82d6a0f2c41208ec

SHA1
c01e5bc3e9dbb84a5b36841045055999fc0a16cf

SHA256
81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa

SHA512
d55e184309e122ffbe3097bfb64b3e23829228cd16030dca5856bfa1725bc60c2da04bf04c8919ca658ca4b7b03e4be6e6bc9240b5816903609969213be2f97c

Download Submit
C:\Windows\Tasks\Test Task17.job

Filesize
242B

MD5
709ac673787ed0ea4a56fd6b7696a84f

SHA1
cb66a8436bd158782fdac0465e60e8813123382d

SHA256
9a9a2128722a73ee9ac1195cb16656accb420bd79ac2aefab8d3d361b627a287

SHA512
33c0542fbb72f95e788bea458eeee9de3b8779068b83b7c5bca93428e2f1c98c1fc203b61a3f9d39c8c1513bbaf9435b18e0ea2013dc37525ac921f4705c7e84

Download Submit
memory/2432-1099-0x0000000073D4E000-0x0000000073D4F000-memory.dmp

Filesize
4KB

Download
memory/2432-1100-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2173-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2190-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2181-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2180-0x0000000073D4E000-0x0000000073D4F000-memory.dmp

Filesize
4KB

Download
memory/2432-2179-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2178-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/2432-2177-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/3744-28-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-49-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-64-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-62-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-60-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-58-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-56-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-54-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-52-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-50-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-46-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-44-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-42-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-40-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-38-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-36-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-34-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-32-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-30-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-68-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-26-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-22-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-20-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-19-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-12-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-66-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-8-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-6-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-24-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-10-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-5-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-1077-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3744-1078-0x0000000005630000-0x0000000005688000-memory.dmp

Filesize
352KB

Download
memory/3744-1079-0x00000000055D0000-0x000000000561C000-memory.dmp

Filesize
304KB

Download
memory/3744-1083-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3744-1084-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3744-14-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-16-0x00000000054A0000-0x0000000005576000-memory.dmp

Filesize
856KB

Download
memory/3744-4-0x00000000054A0000-0x000000000557C000-memory.dmp

Filesize
880KB

Download
memory/3744-3-0x00000000053C0000-0x000000000549C000-memory.dmp

Filesize
880KB

Download
memory/3744-2-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3744-1-0x0000000000920000-0x0000000000A1A000-memory.dmp

Filesize
1000KB

Download
memory/3744-1085-0x00000000743DE000-0x00000000743DF000-memory.dmp

Filesize
4KB

Download
memory/3744-1086-0x0000000006070000-0x0000000006614000-memory.dmp

Filesize
5.6MB

Download
memory/3744-1087-0x0000000005760000-0x00000000057B4000-memory.dmp

Filesize
336KB

Download
memory/3744-1095-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3744-0-0x00000000743DE000-0x00000000743DF000-memory.dmp

Filesize
4KB

Download
memory/3896-2188-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4980-1093-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download