blihanstealer | 73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103

Analysis

max time kernel
149s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2025, 02:27

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General

Target

73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe
Size

73KB
MD5

b13eb4670f5ffd81489152cdf1124a5f
SHA1

e86079c9e4370424bdbb1e8fddaaf21ba747a541
SHA256

73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103
SHA512

286e4885a2f318c085c55f36da6513975b8dd0163742f23becc8aef4c13715360838d24f119a37476c58e5b7486f8a044c9243377787146fea8fe15de79a9431
SSDEEP

1536:e6q10k0EFjed6rqJ+6vghzwYu7vih9GueIh9j2IoHAcBHUIF2kvEHrH1hyhuhrhV:E1oEFlt6vghzwYu7vih9GueIh9j2IoHa

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
4716	microsofthelp.exe

Executes dropped EXE 2 IoCs

pid	Process
4716	microsofthelp.exe
2284	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-1-5-21-83325578-304917428-1200496059-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe
File created	C:\Windows\microsofthelp.exe	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.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	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 4716	452	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe	87
PID 452 wrote to memory of 4716	452	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe	87
PID 452 wrote to memory of 4716	452	73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe	87
PID 5092 wrote to memory of 2284	5092	cmd.exe	89
PID 5092 wrote to memory of 2284	5092	cmd.exe	89
PID 5092 wrote to memory of 2284	5092	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe
"C:\Users\Admin\AppData\Local\Temp\73c77f52a572a363bdeff5d4ecaffd7aad05afd709b62165deb5d4544794c103.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452
- 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:4716

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Windows\microsofthelp.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:5092
- C:\Windows\microsofthelp.exe
  C:\Windows\microsofthelp.exe
  2⤵
  - Executes dropped EXE
  PID:2284

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
74KB

MD5
0bccc08dac8b14838f266d8914b4022d

SHA1
a8fa6dcc964403ba4f4db07dca40bca478f4e622

SHA256
fad421d31046b25c0e9db0a35aba0dc6347f7e8ba4e67549c782a17391a40c80

SHA512
76a1ce1b0e66731e70d0ef938ee2b7ea4dbd6f812f41b65d2e7b39b266ac4f5342bababea5505c5ab8a36d93b3501c5e6a3860b9166c0e519d500fdf85875671

Download Submit
memory/452-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/452-6-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2284-8-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4716-9-0x0000000000400000-0x000000000040E000-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