b8c1f3abe165e1bab5616f0b739f1cb53c642c40ffc92f9f26aec1a73eaf0de2

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 00:15

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General

Target

$PLUGINSDIR/nsRandom.dll
Size

21KB
MD5

ab467b8dfaa660a0f0e5b26e28af5735
SHA1

596abd2c31eaff3479edf2069db1c155b59ce74d
SHA256

db267d9920395b4badc48de04df99dfd21d579480d103cae0f48e6578197ff73
SHA512

7d002dc203997b8a4d8ec20c92cd82848e29d746414f4a61265c76d4afb12c05bce826fc63f4d2bd3d527f38506c391855767d864c37584df11b5db9ca008301
SSDEEP

384:LCHDPMs4GdtyO5roguusMxUXiO3wOw95euooP2UgKbd9BvNtf:LCHD6Gh87MKXil/5r2U3z

Score

5^/10

discovery upx

Malware Config

Signatures

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral20/memory/524-3-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral20/memory/524-2-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral20/memory/524-0-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral20/memory/524-4-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3032 524 WerFault.exe rundll32.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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

pid	pid_target	process	target process
3032	524	WerFault.exe	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 2260 wrote to memory of 524	2260	rundll32.exe	rundll32.exe
PID 524 wrote to memory of 3032	524	rundll32.exe	WerFault.exe
PID 524 wrote to memory of 3032	524	rundll32.exe	WerFault.exe
PID 524 wrote to memory of 3032	524	rundll32.exe	WerFault.exe
PID 524 wrote to memory of 3032	524	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 524 -s 232
    3⤵
    - Program crash
    PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

memory/524-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/524-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/524-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/524-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/524-4-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download