blihanstealer | e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584

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, 07:28

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General

Target

e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe
Size

96KB
MD5

aa37c96b2241dcf8883f21e08a3ba430
SHA1

dccaba9a598934b50d63861cdee7cb5b8138620e
SHA256

e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584
SHA512

a448dc823eec6d72c87176fad526124b1c8fefce577838bf66d031cd51c16bd821198221bec139a94a9ce69a32cbdcf451ca47d31a58ebf3884e4b0c5067a38e
SSDEEP

3072:NAoglOwvl4ulkP6vghzwYu7vih9GueIh9j2IoHAcBHUIF2kvEHrH1hyhuhrh1hKr:een

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
4352	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4352	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"	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.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	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 4352	1756	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe	86
PID 1756 wrote to memory of 4352	1756	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe	86
PID 1756 wrote to memory of 4352	1756	e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe	86

C:\Users\Admin\AppData\Local\Temp\e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe
"C:\Users\Admin\AppData\Local\Temp\e77b45735ffc47cc78626f4408a15e3738da82a827ca9c30fcec4d26190b7584N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1756
- 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:4352

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
96KB

MD5
467e33a1db09e43032741f87f2e640a4

SHA1
1417e9387c8e498059d27f90684921009d56f331

SHA256
745c83b7b2532a7fcc6833ec7aa0d42f521253d3c31d522776f760cecb2da3ff

SHA512
b516d5837db3de594a6625d5ea1ec47515ee5d7a95a470eb970926e78ee384c6a84fd4368684166bc7119fcdb3e9927c1f69b657defdb32d80fe5da9c0cc69a4

Download Submit
memory/1756-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1756-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4352-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads