blihanstealer | a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 23:45

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General

Target

a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe
Size

54KB
MD5

4c4bd8320b656966d01874d3f8f89500
SHA1

6dcd7370f2d380f55b657bdd6ae5685a2c3bdb48
SHA256

a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1
SHA512

cef0daa529ece6a062fd75004949e4c03de2690909033c5a1d09b11618c60f8cbe82595b1ec292c7853cf47a4b1a0e164d391dae17a90278948b4ea9be87fe69
SSDEEP

1536:e6q10k0EFjed6rqJ+6v8tvGE9UHrSdghj8bvHRIkhbUIchUh80mhDhNIhH+hjhUY:E1oEFlt6v8tvGE9UHrSdghj8bvHRIkhI

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
2308	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
2308	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2560 wrote to memory of 2308	2560	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe	31
PID 2560 wrote to memory of 2308	2560	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe	31
PID 2560 wrote to memory of 2308	2560	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe	31
PID 2560 wrote to memory of 2308	2560	a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe	31

C:\Users\Admin\AppData\Local\Temp\a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe
"C:\Users\Admin\AppData\Local\Temp\a63a8b2cc66e20ceee31abc51cf4e4521c59a8b8e7f2b2b246741c0b69bae7a1.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:2308

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
55KB

MD5
abc4589b1a71e7d8936eb656447ac10d

SHA1
fc7e1b7f34ecbf4cb3aa97e8f8346beb2014fecc

SHA256
e1b94bc11427af75109e8671b607ce8bada72a1d726adce1579d7593f2a4c27c

SHA512
268273e869bfa6c7a5adeeda0916dbbfead58c235a6c56c8fb9417b496777a02e3fcbc1647b1023da8a542a351f8695a72780b22791cbdeaadb262c1357543ba

Download Submit
memory/2308-9-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2308-11-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2560-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2560-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads