b3907bee79541c0f61a81141ef7bc21f9f84a18d51db33fa801dba3d690f9a1d

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/01/2025, 23:24

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General

Target

b3907bee79541c0f61a81141ef7bc21f9f84a18d51db33fa801dba3d690f9a1d.dll
Size

76KB
MD5

00557efa91c33d3424df52da02cbc937
SHA1

0b77453c7d4de9c59694c63348a3f73624d1dede
SHA256

b3907bee79541c0f61a81141ef7bc21f9f84a18d51db33fa801dba3d690f9a1d
SHA512

f5ce749eeb79a1c916175047e1762748245e15e4bcd6dc8576d37de23ef44614e523fa781d16e664f799517c706c84b4371e8841f235966945220541d58e6364
SSDEEP

1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7Z1W41j/7:c8y93KQjy7G55riF1cMo03PW4l/7

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2900-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2900-1-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2900-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2988	2900	WerFault.exe	30

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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 1948 wrote to memory of 2900	1948	rundll32.exe	30
PID 2900 wrote to memory of 2988	2900	rundll32.exe	31
PID 2900 wrote to memory of 2988	2900	rundll32.exe	31
PID 2900 wrote to memory of 2988	2900	rundll32.exe	31
PID 2900 wrote to memory of 2988	2900	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3907bee79541c0f61a81141ef7bc21f9f84a18d51db33fa801dba3d690f9a1d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3907bee79541c0f61a81141ef7bc21f9f84a18d51db33fa801dba3d690f9a1d.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 308
    3⤵
    - Program crash
    PID:2988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2900-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2900-1-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2900-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download