22b2fce0f300353468c409cb80f363ccd1a9c0e5355d0cc834b9bc47dbfbb973 | Triage

Analysis

max time kernel
92s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 07:15

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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

7^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

resource	yara_rule
behavioral14/memory/1432-0-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral14/memory/1432-1-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4964	1432	WerFault.exe	85

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 1432	3992	rundll32.exe	85
PID 3992 wrote to memory of 1432	3992	rundll32.exe	85
PID 3992 wrote to memory of 1432	3992	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
  2⤵
  PID:1432
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1432 -s 620
    3⤵
    - Program crash
    PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1432 -ip 1432
1⤵
PID:4572

Network

MITRE ATT&CK Matrix

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Downloads

memory/1432-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1432-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download