purelogstealer | 585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815

Analysis

max time kernel
144s
max time network
146s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-03-2024 12:44

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General

Target

file.exe
Size

419KB
MD5

8a716466aa6f2d425ec09770626e8e54
SHA1

62fb757ea5098651331f91c1664db9fe46b21879
SHA256

585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815
SHA512

54f11067e400347834689b4532ae53b00ec96a3ca90a2c21de27942f4ca30306fdda0522c1a3a4cde047ad650162e2d8313205220acaab4cc60e010965690940
SSDEEP

6144:QTCsE3O4yuS5O0RBOInaCa6G6ypdf4Bf7e/DnjBeq04fVXOUvE0CGsSE9BLM:2E3O5uOO0mInnGZCTS84fZLtw

Score

10^/10

purelogstealer xworm rat stealer trojan

Malware Config

Extracted

Family

xworm

Version

5.0

5.182.87.154:7000

Mutex

VMFidhoqn75fm5lJ

Attributes

Install_directory
%Temp%
install_file
mdnsresp.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/3024-11-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/3024-13-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/3024-17-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/3024-19-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/3024-21-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

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

PureLog Stealer payload 1 IoCs

resource	yara_rule
behavioral1/memory/2868-3-0x00000000004E0000-0x0000000000528000-memory.dmp	family_purelog_stealer

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mdnsresp.lnk	file.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mdnsresp.lnk	file.exe

Loads dropped DLL 1 IoCs

pid	Process
3024	file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2868 set thread context of 3024	2868	file.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2096	powershell.exe
2556	powershell.exe
1872	powershell.exe
2388	powershell.exe
1692	powershell.exe
3024	file.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	file.exe
Token: SeDebugPrivilege	3024	file.exe
Token: SeDebugPrivilege	2096	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	1872	powershell.exe
Token: SeDebugPrivilege	2388	powershell.exe
Token: SeDebugPrivilege	1692	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3024	file.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2096	2868	file.exe	28
PID 2868 wrote to memory of 2096	2868	file.exe	28
PID 2868 wrote to memory of 2096	2868	file.exe	28
PID 2868 wrote to memory of 2096	2868	file.exe	28
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 2868 wrote to memory of 3024	2868	file.exe	30
PID 3024 wrote to memory of 2556	3024	file.exe	31
PID 3024 wrote to memory of 2556	3024	file.exe	31
PID 3024 wrote to memory of 2556	3024	file.exe	31
PID 3024 wrote to memory of 2556	3024	file.exe	31
PID 3024 wrote to memory of 1872	3024	file.exe	33
PID 3024 wrote to memory of 1872	3024	file.exe	33
PID 3024 wrote to memory of 1872	3024	file.exe	33
PID 3024 wrote to memory of 1872	3024	file.exe	33
PID 3024 wrote to memory of 2388	3024	file.exe	35
PID 3024 wrote to memory of 2388	3024	file.exe	35
PID 3024 wrote to memory of 2388	3024	file.exe	35
PID 3024 wrote to memory of 2388	3024	file.exe	35
PID 3024 wrote to memory of 1692	3024	file.exe	37
PID 3024 wrote to memory of 1692	3024	file.exe	37
PID 3024 wrote to memory of 1692	3024	file.exe	37
PID 3024 wrote to memory of 1692	3024	file.exe	37

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAZgBpAGwAZQAuAGUAeABlADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAZgBpAGwAZQAuAGUAeABlADsA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2096
- C:\Users\Admin\AppData\Local\Temp\file.exe
  C:\Users\Admin\AppData\Local\Temp\file.exe
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\file.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2556
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'file.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1872
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2388
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
8bd931987585d4f37ffe0bdb31763f77

SHA1
a435b95b8e33e097c5360643ad5d05c1328b9f9c

SHA256
e0f18b32bb68fc06417c206a94c049bd7f6a5165ff8a730bb7eb2a0972cd53ac

SHA512
04f624717fa7775aa329ca0ef692bfd11fb2ad5894793a79b37ed8dce1cd4fcb6aff2b2cd5cf82106b7a4de7d965f5d1986e181e8fdbcf871e2d3090d92339fa

Download Submit
\Users\Admin\AppData\Local\Temp\mdnsresp.exe

Filesize
419KB

MD5
8a716466aa6f2d425ec09770626e8e54

SHA1
62fb757ea5098651331f91c1664db9fe46b21879

SHA256
585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815

SHA512
54f11067e400347834689b4532ae53b00ec96a3ca90a2c21de27942f4ca30306fdda0522c1a3a4cde047ad650162e2d8313205220acaab4cc60e010965690940

Download Submit
memory/1692-68-0x0000000002A00000-0x0000000002A40000-memory.dmp

Filesize
256KB

Download
memory/1692-67-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/1692-72-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/1692-71-0x0000000002A00000-0x0000000002A40000-memory.dmp

Filesize
256KB

Download
memory/1692-70-0x0000000002A00000-0x0000000002A40000-memory.dmp

Filesize
256KB

Download
memory/1692-69-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-50-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-49-0x0000000002AA0000-0x0000000002AE0000-memory.dmp

Filesize
256KB

Download
memory/1872-48-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/1872-47-0x000000006FBA0000-0x000000007014B000-memory.dmp

Filesize
5.7MB

Download
memory/2096-27-0x00000000028C0000-0x0000000002900000-memory.dmp

Filesize
256KB

Download
memory/2096-26-0x0000000071650000-0x0000000071BFB000-memory.dmp

Filesize
5.7MB

Download
memory/2096-28-0x00000000028C0000-0x0000000002900000-memory.dmp

Filesize
256KB

Download
memory/2096-29-0x0000000071650000-0x0000000071BFB000-memory.dmp

Filesize
5.7MB

Download
memory/2096-30-0x0000000071650000-0x0000000071BFB000-memory.dmp

Filesize
5.7MB

Download
memory/2388-56-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2388-58-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2388-61-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2388-57-0x0000000002890000-0x00000000028D0000-memory.dmp

Filesize
256KB

Download
memory/2388-60-0x0000000002890000-0x00000000028D0000-memory.dmp

Filesize
256KB

Download
memory/2556-36-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2556-41-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2556-37-0x0000000070150000-0x00000000706FB000-memory.dmp

Filesize
5.7MB

Download
memory/2556-38-0x0000000002AF0000-0x0000000002B30000-memory.dmp

Filesize
256KB

Download
memory/2556-39-0x0000000002AF0000-0x0000000002B30000-memory.dmp

Filesize
256KB

Download
memory/2556-40-0x0000000002AF0000-0x0000000002B30000-memory.dmp

Filesize
256KB

Download
memory/2868-4-0x0000000000930000-0x0000000000960000-memory.dmp

Filesize
192KB

Download
memory/2868-0-0x0000000000980000-0x00000000009F0000-memory.dmp

Filesize
448KB

Download
memory/2868-3-0x00000000004E0000-0x0000000000528000-memory.dmp

Filesize
288KB

Download
memory/2868-2-0x0000000004A60000-0x0000000004AA0000-memory.dmp

Filesize
256KB

Download
memory/2868-1-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-5-0x00000000044D0000-0x0000000004500000-memory.dmp

Filesize
192KB

Download
memory/2868-22-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-6-0x00000000045B0000-0x00000000045FC000-memory.dmp

Filesize
304KB

Download
memory/3024-17-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-59-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/3024-23-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/3024-21-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-19-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3024-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-9-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-7-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-78-0x0000000000690000-0x00000000006D0000-memory.dmp

Filesize
256KB

Download
memory/3024-79-0x0000000000690000-0x00000000006D0000-memory.dmp

Filesize
256KB

Download