blihanstealer | 5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24/03/2025, 01:32

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General

Target

5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe
Size

50KB
MD5

0afb3c7d97fb8a374e36b11fc19294c0
SHA1

21eab65efefa90d1abde59e77489e70aaa855178
SHA256

5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3
SHA512

667ab6e99fc1ab9d66756be0ea2a57bfbcd83c14ffeca41c7d0a314e9e8c69003bb1589419145a95885fd2009dd49b20b173cc1347b6d8cbf13a5f2adbb1d134
SSDEEP

1536:e6q10k0EFjed6rqJ+6vghzwYu7vih9GueIh9j2IoHAjUvJQ/johleHhvGhZchUXf:E1oEFlt6vghzwYu7vih9GueIh9j2IoHV

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
1104	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
1104	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.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	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.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	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 1104	1840	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe	31
PID 1840 wrote to memory of 1104	1840	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe	31
PID 1840 wrote to memory of 1104	1840	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe	31
PID 1840 wrote to memory of 1104	1840	5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe	31

C:\Users\Admin\AppData\Local\Temp\5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe
"C:\Users\Admin\AppData\Local\Temp\5aa1f14a6b06482761f4738fbbf797a4a2125af03ffbfee5cd8350cfafceb2d3N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:1104

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
50KB

MD5
7013dba491be8876593b1c3da8ca614c

SHA1
17d371be7a6e98b3b2f21f00914cf681b38eaa43

SHA256
67bf35b740eea86678a9c43368236e073fce8ac2add84fe457374679cec2a30a

SHA512
90b8250289d76eb561e99eb0b8c361e0499777c4d65a1b5166004d12749d469acfa6d31ee64d834446c249d8b0f1e1aef71d4a4a0ad422e055c7720bb76e5994

Download Submit
memory/1104-9-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1104-11-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1840-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1840-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads