purelogstealer | bcf82a664524ff945372110afa059dc00c5f1939aae4d9d6c1651efce359c2af

Resubmissions

03-09-2024 09:38

240903-lmhyqsvapf 10

03-09-2024 09:21

240903-lbbehsshkk 10

Analysis

max time kernel
97s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-09-2024 09:38

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General

Target

coco.exe
Size

1.8MB
MD5

ecf3cafacfc3e4cedff5156af2e57478
SHA1

8945bca5a7487ef443f69c600f1f2a83c2343080
SHA256

bcf82a664524ff945372110afa059dc00c5f1939aae4d9d6c1651efce359c2af
SHA512

8bf8399633cfa4d5102134942c161a838502196eadb25f04a9c259baad62864926b0bcbcee1ca040078fc94520bdc80a179c60b2c2526cb7b4ae3bea0ebbde77
SSDEEP

49152:nLzdJy9jEhhXFxAXVUw3yqQro900RheJYCVLy+Lv:Vkj8LAXuo8s0xfd

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

resource	yara_rule
behavioral2/memory/2952-1-0x0000000000C60000-0x0000000000E3E000-memory.dmp	family_purelog_stealer

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2952 created 3400	2952	coco.exe	56

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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Owtutdnsolg = "C:\\Users\\Admin\\AppData\\Roaming\\Owtutdnsolg.exe"	coco.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2952 set thread context of 2856	2952	coco.exe	87

System Location Discovery: System Language Discovery 1 TTPs 2 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	coco.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2952	coco.exe
2952	coco.exe
2952	coco.exe
2952	coco.exe
2856	InstallUtil.exe
2856	InstallUtil.exe
2856	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	coco.exe
Token: SeDebugPrivilege	2952	coco.exe
Token: SeDebugPrivilege	2856	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87
PID 2952 wrote to memory of 2856	2952	coco.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3400
- C:\Users\Admin\AppData\Local\Temp\coco.exe
  "C:\Users\Admin\AppData\Local\Temp\coco.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:2952
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2856

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/2856-1095-0x0000000000400000-0x00000000004FC000-memory.dmp

Filesize
1008KB

Download
memory/2856-1098-0x00000000054C0000-0x00000000054C8000-memory.dmp

Filesize
32KB

Download
memory/2856-1101-0x00000000057E0000-0x00000000058F0000-memory.dmp

Filesize
1.1MB

Download
memory/2856-1100-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2856-1096-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2856-3992-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2856-3990-0x0000000005990000-0x0000000005A2E000-memory.dmp

Filesize
632KB

Download
memory/2952-48-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-26-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-4-0x0000000005AC0000-0x0000000005C7E000-memory.dmp

Filesize
1.7MB

Download
memory/2952-22-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-5-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-30-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-62-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-60-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-68-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-66-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-64-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-58-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-56-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-54-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-52-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-50-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-46-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-44-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-42-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-40-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-38-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-2-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-36-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-34-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-28-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-3-0x0000000005750000-0x000000000590E000-memory.dmp

Filesize
1.7MB

Download
memory/2952-24-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-20-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-18-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-16-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-14-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-12-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-10-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-8-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-6-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-32-0x0000000005AC0000-0x0000000005C79000-memory.dmp

Filesize
1.7MB

Download
memory/2952-1079-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1080-0x0000000005F40000-0x0000000006078000-memory.dmp

Filesize
1.2MB

Download
memory/2952-1081-0x0000000005D50000-0x0000000005D9C000-memory.dmp

Filesize
304KB

Download
memory/2952-1082-0x0000000006080000-0x0000000006112000-memory.dmp

Filesize
584KB

Download
memory/2952-1083-0x0000000005E50000-0x0000000005EB6000-memory.dmp

Filesize
408KB

Download
memory/2952-1087-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1088-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1089-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1090-0x0000000006C80000-0x0000000007224000-memory.dmp

Filesize
5.6MB

Download
memory/2952-1091-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1092-0x0000000006710000-0x0000000006764000-memory.dmp

Filesize
336KB

Download
memory/2952-1099-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2952-1-0x0000000000C60000-0x0000000000E3E000-memory.dmp

Filesize
1.9MB

Download
memory/2952-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2952-1097-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download