blihanstealer | 49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d

Analysis

max time kernel
120s
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
23/03/2025, 23:45

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General

Target

49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe
Size

65KB
MD5

41cfacdbab38d67a910f60468b8672bb
SHA1

8d89a70b11303b815cee025d26cc7310a43a9539
SHA256

49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d
SHA512

17d6ff3aa1a16498ff00f6473e685c5c65dcc4ca0ab7323ab65205f090eeb70358030bd2bd0bb6755eb58a9d7737515198ed3d658037596c62eb7ad951644143
SSDEEP

1536:e6q10k0EFjed6rqJ+6vghzwYu7vih9GueIh9j2IoHAjU+EmkcU+uhIehXehXhHhN:E1oEFlt6vghzwYu7vih9GueIh9j2IoHY

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
3088	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3088	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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.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	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3636 wrote to memory of 3088	3636	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe	86
PID 3636 wrote to memory of 3088	3636	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe	86
PID 3636 wrote to memory of 3088	3636	49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe	86

C:\Users\Admin\AppData\Local\Temp\49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe
"C:\Users\Admin\AppData\Local\Temp\49a5937d47e5fa3cb72572c1df09587a7d8fdd52c481750c46a1ce75c945378d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3636
- 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:3088

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
66KB

MD5
6cc7658acea7289153a87459968307f5

SHA1
afd0ca68c764c2f90d677063d89f05a3911c01d4

SHA256
45d24a25fb7ef8c8f926396e083d9f47d4fdf8c552da281cd4b94f6100937903

SHA512
f1776bc72d21a75cc3846744e0e975760a31193faf2f66434e47a27a1a041babdcef2aa790869051d752dbb785290d2126595cff24d9997dc44c922998245412

Download Submit
memory/3088-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3636-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3636-6-0x0000000000400000-0x000000000040E000-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