blihanstealer | a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16

Analysis

max time kernel
119s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
24/03/2025, 02:40

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General

Target

a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe
Size

41KB
MD5

c3bef7194087c48af9c7ba9e7bc0004e
SHA1

842e3e9560cb4d226115abbfa14a388777bd6d94
SHA256

a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16
SHA512

9f8886e7c7c7da6ff7711901249d903d3bbf7b04e47239377152aa5b60c5931a66eb1d83c6276d5f7870994ae43dc86c98a73cc5c2c2f423c9f58f0394232e9b
SSDEEP

768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjU+Eh6IU:e6q10k0EFjed6rqJ+6vghzwYu7vih9Gw

Score

10^/10

blihanstealer discovery persistence stealer trojan

Malware Config

Extracted

Family

blihanstealer

Mutex

pomdfghrt

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; CIBA; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)

Signatures

BlihanStealer
Blihan is a stealer written in C++.
trojan stealer blihanstealer
Blihanstealer family
blihanstealer

Deletes itself 1 IoCs

pid	Process
412	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
412	microsofthelp.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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

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	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5436 wrote to memory of 412	5436	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe	86
PID 5436 wrote to memory of 412	5436	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe	86
PID 5436 wrote to memory of 412	5436	a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe	86

C:\Users\Admin\AppData\Local\Temp\a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe
"C:\Users\Admin\AppData\Local\Temp\a683902d84040d7399ff6e6488b4818725dee2f6cc2899bf4b06e26a9c0e2d16.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5436
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:412

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

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Downloads

C:\Windows\microsofthelp.exe

Filesize
41KB

MD5
3bdb455fc7a5f7a701758268aabeea6d

SHA1
162532c01d63ea38dcb4d2b365ff71d4ac29efce

SHA256
4091b56e1308b55e7eb0e89932b15128c82f49a6ea7e655c82027887e7d243a2

SHA512
44e78b5b13887cc9f61407880e9bae63b1d0c400f20842b04b7a36e395888c44c0fc2614ef0bb4a5fba4b2f4aac32b3860c109ab4a282ab25c8fb1d450156b7e

Download Submit
memory/412-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/5436-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/5436-5-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads