purelogstealer | 81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
20-08-2024 16:22

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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 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1356-1-0x00000000012F0000-0x00000000013EA000-memory.dmp	family_purelog_stealer

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\afasdfga = "C:\\Users\\Admin\\AppData\\Roaming\\afasdfga.exe"	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3256 1356 WerFault.exe 81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

pid	pid_target	process	target process
3256	1356	WerFault.exe	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

pid process

1356 81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

pid	process
1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

description	pid	process
Token: SeDebugPrivilege	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
Token: SeDebugPrivilege	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe

description	pid	process	target process
PID 1356 wrote to memory of 3256	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	WerFault.exe
PID 1356 wrote to memory of 3256	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	WerFault.exe
PID 1356 wrote to memory of 3256	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	WerFault.exe
PID 1356 wrote to memory of 3256	1356	81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe
"C:\Users\Admin\AppData\Local\Temp\81f91061c650c2d9fdeab6a9d8be220a93d46f930d5c435e4a00c511236a4caa.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 624
  2⤵
  - Program crash
  PID:3256

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

Replay Monitor

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Downloads

memory/1356-0-0x000000007436E000-0x000000007436F000-memory.dmp

Filesize
4KB

Download
memory/1356-1-0x00000000012F0000-0x00000000013EA000-memory.dmp

Filesize
1000KB

Download
memory/1356-2-0x0000000001190000-0x000000000126C000-memory.dmp

Filesize
880KB

Download
memory/1356-3-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-4-0x00000000049A0000-0x0000000004A7C000-memory.dmp

Filesize
880KB

Download
memory/1356-5-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-22-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-34-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-6-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-42-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-40-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-38-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-36-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-32-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-30-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-28-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-26-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-24-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-20-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-18-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-17-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-14-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-12-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-10-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-8-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-48-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-51-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-68-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-66-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-64-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-63-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-60-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-58-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-56-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-54-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-52-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-46-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-44-0x00000000049A0000-0x0000000004A76000-memory.dmp

Filesize
856KB

Download
memory/1356-1077-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-1078-0x0000000000C80000-0x0000000000CD8000-memory.dmp

Filesize
352KB

Download
memory/1356-1079-0x0000000000CF0000-0x0000000000D3C000-memory.dmp

Filesize
304KB

Download
memory/1356-1080-0x000000007436E000-0x000000007436F000-memory.dmp

Filesize
4KB

Download
memory/1356-1081-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-1082-0x0000000001270000-0x00000000012C4000-memory.dmp

Filesize
336KB

Download