shurk | 26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322

Analysis

max time kernel
156s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2022 16:42

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General

Target

26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe
Size

1.5MB
MD5

624cc456a092da6c9e6743ae6c8e23ae
SHA1

dce5d9d408802275eed56373aef0fd49053984e2
SHA256

26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322
SHA512

3e480419934d2c03e7499a9f79118638b6a8dd91ed744c08a5040c75a67ecd1d26cd64f6fba7070fcb32d2936991fd85e373fccd106d2dada9dbc599fbccbb11
SSDEEP

12288:anjVXpKgCPfJ5joXK2LUxv7VNdr1GI1xc8a+FwEwCGgRhde12kVSC4jkS695Dn19:YCHJ57xpLpLc8mEwCxL3kz9pn

Score

10^/10

shurk infostealer spyware stealer

Malware Config

Signatures

Shurk
Shurk is an infostealer, written in C++ which appeared in 2021.
infostealer shurk

Shurk Stealer payload 5 IoCs

resource	yara_rule
behavioral2/memory/2100-138-0x0000000000400000-0x000000000047F000-memory.dmp	shurk_stealer
behavioral2/memory/2100-140-0x0000000000400000-0x000000000047F000-memory.dmp	shurk_stealer
behavioral2/memory/2100-141-0x0000000000400000-0x000000000047F000-memory.dmp	shurk_stealer
behavioral2/memory/2100-142-0x0000000000400000-0x000000000047F000-memory.dmp	shurk_stealer
behavioral2/memory/2100-143-0x0000000000400000-0x000000000047F000-memory.dmp	shurk_stealer

Executes dropped EXE 1 IoCs

pid	Process
2100	AddInProcess32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4364 set thread context of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe
4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe
2100	AddInProcess32.exe
2100	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80
PID 4364 wrote to memory of 2100	4364	26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe	80

C:\Users\Admin\AppData\Local\Temp\26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe
"C:\Users\Admin\AppData\Local\Temp\26e8e4ec167b6ab37ae7070e7dfccc0182e5987c914e55e043c5704dd8a36322.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
  "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

Filesize
42KB

MD5
9827ff3cdf4b83f9c86354606736ca9c

SHA1
e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

SHA256
c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

SHA512
8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

Download Submit
memory/2100-138-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2100-140-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2100-141-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2100-142-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2100-143-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4364-132-0x0000000000740000-0x00000000008CC000-memory.dmp

Filesize
1.5MB

Download
memory/4364-133-0x00000000057F0000-0x0000000005D94000-memory.dmp

Filesize
5.6MB

Download
memory/4364-134-0x00000000052E0000-0x0000000005372000-memory.dmp

Filesize
584KB

Download
memory/4364-135-0x0000000005DA0000-0x0000000005E3C000-memory.dmp

Filesize
624KB

Download
memory/4364-136-0x0000000005290000-0x00000000052A2000-memory.dmp

Filesize
72KB

Download