b4c9401a93868a7e7ffe5c0012ee44d289c3573d9f9a0ad36ced0ff95e9979bc

Analysis

max time kernel
141s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 04:01

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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

7^/10

discovery upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral13/memory/2000-0-0x0000000000680000-0x0000000000692000-memory.dmp	upx
behavioral13/memory/2000-1-0x0000000000680000-0x0000000000692000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1416	2000	WerFault.exe	31

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 WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2888 wrote to memory of 2000	2888	rundll32.exe	31
PID 2000 wrote to memory of 1416	2000	rundll32.exe	32
PID 2000 wrote to memory of 1416	2000	rundll32.exe	32
PID 2000 wrote to memory of 1416	2000	rundll32.exe	32
PID 2000 wrote to memory of 1416	2000	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2888
- 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:2000
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2000 -s 228
    3⤵
    - Program crash
    PID:1416

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

Replay Monitor

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Downloads

memory/2000-0-0x0000000000680000-0x0000000000692000-memory.dmp

Filesize
72KB

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memory/2000-1-0x0000000000680000-0x0000000000692000-memory.dmp

Filesize
72KB

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