purelogstealer | 64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-08-2024 01:10

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General

Target

64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
Size

924KB
MD5

de64bb0f39113e48a8499d3401461cf8
SHA1

8d78c2d4701e4596e87e3f09adde214a2a2033e8
SHA256

64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a
SHA512

35b7cdcfb866dcdc79be34066a9ad5a8058b80e68925aeb23708606149841022de17e9d205389c13803c01e356174a2f657773df7d53f889e4e1fc1d68074179
SSDEEP

24576:NAHFp2K15zXnjfQb6+jFb5RIAJTOcA4gnPdCPPd7wm:WHf15zM5JbtA4wPdCnd75

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/4964-1-0x0000000000020000-0x000000000010E000-memory.dmp	family_purelog_stealer
behavioral2/files/0x000c0000000233a1-1097.dat	family_purelog_stealer

Suspicious use of NtCreateUserProcessOtherParentProcess 3 IoCs

description	pid	Process	procid_target
PID 4964 created 3432	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	55
PID 4924 created 3432	4924	opetag.exe	55
PID 3472 created 3432	3472	opetag.exe	55

Executes dropped EXE 4 IoCs

pid	Process
4924	opetag.exe
572	opetag.exe
3472	opetag.exe
1724	opetag.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"	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4964 set thread context of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4924 set thread context of 572	4924	opetag.exe	103
PID 3472 set thread context of 1724	3472	opetag.exe	114

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.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	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	opetag.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	opetag.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	opetag.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	opetag.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
4924	opetag.exe
3472	opetag.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
Token: SeDebugPrivilege	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
Token: SeDebugPrivilege	4924	opetag.exe
Token: SeDebugPrivilege	4924	opetag.exe
Token: SeDebugPrivilege	3472	opetag.exe
Token: SeDebugPrivilege	3472	opetag.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4964 wrote to memory of 3792	4964	64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe	90
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 4924 wrote to memory of 572	4924	opetag.exe	103
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114
PID 3472 wrote to memory of 1724	3472	opetag.exe	114

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3432
- C:\Users\Admin\AppData\Local\Temp\64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
  "C:\Users\Admin\AppData\Local\Temp\64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.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:4964
- C:\Users\Admin\AppData\Local\Temp\64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe
  "C:\Users\Admin\AppData\Local\Temp\64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:3792
- C:\ProgramData\wmnvhs\opetag.exe
  "C:\ProgramData\wmnvhs\opetag.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:572
- C:\ProgramData\wmnvhs\opetag.exe
  "C:\ProgramData\wmnvhs\opetag.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1724

C:\ProgramData\wmnvhs\opetag.exe
C:\ProgramData\wmnvhs\opetag.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:4924

C:\ProgramData\wmnvhs\opetag.exe
C:\ProgramData\wmnvhs\opetag.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:3472

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

C:\ProgramData\wmnvhs\opetag.exe

Filesize
924KB

MD5
de64bb0f39113e48a8499d3401461cf8

SHA1
8d78c2d4701e4596e87e3f09adde214a2a2033e8

SHA256
64b58794801f282e92571676e3571afc5c59033c262406bf0d36e1d6ef3cda6a

SHA512
35b7cdcfb866dcdc79be34066a9ad5a8058b80e68925aeb23708606149841022de17e9d205389c13803c01e356174a2f657773df7d53f889e4e1fc1d68074179

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

Filesize
238B

MD5
b6ae54b8873f4de27b8bfa6fdc1a1862

SHA1
561fcda25f11dd1b6eee2f3a2c01547f3dd4c323

SHA256
0ed8e3537270bd59dcaa28ce379fa8e49894b6c077879cb08a3fc5bedfabb370

SHA512
56564ed01a778c663af60dc828e5f21a5f0194732867eed1695b7ad6d4e8aa701863eca37a48421a065b1733102b3292b6cd3684c12655b27ae4e1833d36a975

Download Submit
memory/572-2188-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3792-1093-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4924-2179-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-2180-0x000000007431E000-0x000000007431F000-memory.dmp

Filesize
4KB

Download
memory/4924-2181-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-2178-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-2177-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-2173-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-1100-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-1099-0x000000007431E000-0x000000007431F000-memory.dmp

Filesize
4KB

Download
memory/4924-2190-0x0000000074310000-0x0000000074AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4964-16-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-42-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-52-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-50-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-48-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-46-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-44-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-40-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-38-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-36-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-34-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-32-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-28-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-26-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-22-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-20-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-18-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/4964-14-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-12-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-10-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-8-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-7-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-54-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-30-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-1077-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4964-1078-0x0000000004BE0000-0x0000000004C38000-memory.dmp

Filesize
352KB

Download
memory/4964-1079-0x0000000004C40000-0x0000000004C8C000-memory.dmp

Filesize
304KB

Download
memory/4964-1083-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4964-1084-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4964-1085-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/4964-1086-0x00000000055E0000-0x0000000005B84000-memory.dmp

Filesize
5.6MB

Download
memory/4964-1087-0x0000000004D20000-0x0000000004D74000-memory.dmp

Filesize
336KB

Download
memory/4964-56-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-1094-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4964-58-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-60-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-64-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-66-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-68-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-63-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-24-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-5-0x0000000004A50000-0x0000000004B28000-memory.dmp

Filesize
864KB

Download
memory/4964-4-0x0000000004A50000-0x0000000004B2E000-memory.dmp

Filesize
888KB

Download
memory/4964-3-0x00000000048F0000-0x00000000049CC000-memory.dmp

Filesize
880KB

Download
memory/4964-2-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4964-1-0x0000000000020000-0x000000000010E000-memory.dmp

Filesize
952KB

Download