blihanstealer | 1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954

Analysis

max time kernel
119s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23/03/2025, 20:47

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General

Target

1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe
Size

41KB
MD5

6e1f36d9d3a59e081b811ed82e212210
SHA1

3af883a8713888a79636ceb6dd48954fa37d9f61
SHA256

1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954
SHA512

7d269fed73bf16efd8601aec48c18be726f25b1f58e8a3554d8a840370f6e9b4521997dc0387e6bc4315787fb09033aef7b8aa2f918da56b3f91fb170df9006e
SSDEEP

768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjU+Eh6IZ:e6q10k0EFjed6rqJ+6vghzwYu7vih9Gd

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
3052	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3052	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.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	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 3052	1236	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe	30
PID 1236 wrote to memory of 3052	1236	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe	30
PID 1236 wrote to memory of 3052	1236	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe	30
PID 1236 wrote to memory of 3052	1236	1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe	30

C:\Users\Admin\AppData\Local\Temp\1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe
"C:\Users\Admin\AppData\Local\Temp\1c4d35f7652b7dea76c6a63c31e81c67d62fa08fb8104b0bacc3e916894c1954N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:3052

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
42KB

MD5
ef2b160ec1ccb0a9a8a6efb88817802c

SHA1
1bcdcb45b011c26c8d1757a0eb0f21ef60a48c9a

SHA256
a1bc6785d9339f789c1407a5bae71e83e9ea12ecffc9dec0495b2d06f15da5f1

SHA512
2b4c809c788dbd4ba7fda0a87ca148f1d536d35d229780cdd91cb95940991d5fc5f320af91e5f09f9247e628de0c308efddcea23d86f2964a3077b153bd992d5

Download Submit
memory/1236-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1236-6-0x00000000001B0000-0x00000000001BE000-memory.dmp

Filesize
56KB

Download
memory/1236-8-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3052-10-0x0000000000400000-0x000000000040E000-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