blihanstealer | b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80

Analysis

max time kernel
119s
max time network
114s
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, 02:00

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General

Target

b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe
Size

83KB
MD5

94f58f9c3460ef0c6d1f4984b94177e7
SHA1

0aa96acf240561674da52f0f2fdcfd0c3a0bee49
SHA256

b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80
SHA512

67b00e0de8cab3acad365774b7c0296545501f0089b106795f893b8e6b154df2b551b38075d9624b9ec04198930e85a9ea35eb1064aca2542dee773ce1af630a
SSDEEP

1536:NAo0Tj2d6rnJwwvl4ulkP6vghzwYu7vih9GueIh9j2IoHAjU+Eh6IbIKv8hIbHZN:NAoglOwvl4ulkP6vghzwYu7vih9GueI0

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
4524	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4524	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-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.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	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 4524	2280	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe	86
PID 2280 wrote to memory of 4524	2280	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe	86
PID 2280 wrote to memory of 4524	2280	b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe	86

C:\Users\Admin\AppData\Local\Temp\b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe
"C:\Users\Admin\AppData\Local\Temp\b341b759b8814efb64870801a56a78878632921d8c972a350fccb2556667db80.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- 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:4524

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
83KB

MD5
0bdeaa7066d41b6ea34ace13a256510c

SHA1
480bb5d5615a823320082873c6f5acf75db4f61c

SHA256
4864e979234540144422cfcb412fdc5262582dde315285b4a8378d89ea49e01c

SHA512
6163e50cab5f98ad68c66f4e2f814c657e96ea0e46fcbdbd1790b9516e98670cf7fbba9d35db64740016270872c45a02c175dc7b60fec8bb4eef4f9f3ac3d8ef

Download Submit
memory/2280-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2280-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4524-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads