purelogstealer | cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2

Analysis

max time kernel
130s
max time network
159s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
29-07-2024 05:41

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General

Target

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe
Size

6.3MB
MD5

7dd3e725b4b0e2322fa6a087dfbb5a60
SHA1

8694f846dcb951fdb2e629a9024255dcf9c34d5f
SHA256

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2
SHA512

b47169fc4e69799e551369d4bb5af40815050928d3ff40722c9df984f0fbd23b4a9488af42c8aa53673d32cebbef88a0a453d8b9eba301765c4ce5e15b5deb53
SSDEEP

196608:TeKXMpvO+EYWSo9YYv7h1Bf54Gv1IbR3gQ1z:TeIMpvLEDzTd54f/1z

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
behavioral2/memory/1428-1-0x0000000000B00000-0x000000000115A000-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:

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-95457810-830748662-4054918673-1000\Software\Microsoft\Windows\CurrentVersion\Run\cvshost = "C:\\Users\\Admin\\AppData\\Local\\cvshost.exe"	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

description	pid	process	target process
PID 1428 set thread context of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe

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

System Information Discovery
T1082

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

Processes:

timeout.exeInstallUtil.execac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.execmd.exetimeout.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

2240 timeout.exe
4076 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

pid process

1428 cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

pid	process
2240	timeout.exe
4076	timeout.exe

pid	process
1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe
Token: SeDebugPrivilege	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe
Token: SeDebugPrivilege	4100	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.execmd.execmd.exe

description	pid	process	target process
PID 1428 wrote to memory of 3112	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 1428 wrote to memory of 3112	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 1428 wrote to memory of 3112	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 3112 wrote to memory of 2240	3112	cmd.exe	timeout.exe
PID 3112 wrote to memory of 2240	3112	cmd.exe	timeout.exe
PID 3112 wrote to memory of 2240	3112	cmd.exe	timeout.exe
PID 1428 wrote to memory of 1876	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 1428 wrote to memory of 1876	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 1428 wrote to memory of 1876	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	cmd.exe
PID 1876 wrote to memory of 4076	1876	cmd.exe	timeout.exe
PID 1876 wrote to memory of 4076	1876	cmd.exe	timeout.exe
PID 1876 wrote to memory of 4076	1876	cmd.exe	timeout.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe
PID 1428 wrote to memory of 4100	1428	cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe
"C:\Users\Admin\AppData\Local\Temp\cac0b5218693311e4bd40e0dfa76a0f080876640a4c992324c6926d70f228db2.exe"
1⤵
- 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:1428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 5
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3112
- - C:\Windows\SysWOW64\timeout.exe
    timeout 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 5
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\SysWOW64\timeout.exe
    timeout 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4076
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4100

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 Information Discovery

T1082

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/1428-0-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/1428-1-0x0000000000B00000-0x000000000115A000-memory.dmp

Filesize
6.4MB

Download
memory/1428-2-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-3-0x0000000005C30000-0x0000000005D54000-memory.dmp

Filesize
1.1MB

Download
memory/1428-4-0x00000000072E0000-0x0000000007406000-memory.dmp

Filesize
1.1MB

Download
memory/1428-18-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-14-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-12-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-10-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-24-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-23-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-27-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-20-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-16-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-8-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-6-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-5-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-29-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-32-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-34-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-42-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-30-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-43-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-37-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-39-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-35-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-54-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-47-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-45-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-55-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-49-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-51-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-57-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-63-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-69-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-61-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-67-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-65-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-59-0x00000000072E0000-0x0000000007400000-memory.dmp

Filesize
1.1MB

Download
memory/1428-87-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1043-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1044-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1045-0x0000000007540000-0x00000000075E8000-memory.dmp

Filesize
672KB

Download
memory/1428-1046-0x00000000075F0000-0x000000000763C000-memory.dmp

Filesize
304KB

Download
memory/1428-1047-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/1428-1048-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1049-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1050-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/1428-1051-0x0000000008840000-0x0000000008DE6000-memory.dmp

Filesize
5.6MB

Download
memory/1428-1052-0x0000000001B30000-0x0000000001B84000-memory.dmp

Filesize
336KB

Download
memory/1428-1057-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/4100-1056-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4100-1058-0x00000000052B0000-0x000000000536A000-memory.dmp

Filesize
744KB

Download
memory/4100-1060-0x00000000053E0000-0x0000000005446000-memory.dmp

Filesize
408KB

Download
memory/4100-1059-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/4100-1061-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/4100-1062-0x0000000006160000-0x0000000006216000-memory.dmp

Filesize
728KB

Download
memory/4100-1063-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/4100-1064-0x00000000747E0000-0x0000000074F91000-memory.dmp

Filesize
7.7MB

Download
memory/4100-1065-0x00000000066F0000-0x0000000006782000-memory.dmp

Filesize
584KB

Download