1cb6977c6c4553ff7842af9205760e5c5958a85ffb3db2c1e94c69fcd0f0a347 | Triage

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-04-2024 08:42

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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 3 IoCs

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

Processes:

resource	yara_rule
behavioral15/memory/2176-0-0x00000000001A0000-0x00000000001B2000-memory.dmp	upx
behavioral15/memory/2176-1-0x00000000001A0000-0x00000000001B2000-memory.dmp	upx
behavioral15/memory/2176-2-0x00000000001A0000-0x00000000001B2000-memory.dmp	upx

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1720 2176 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 2176	2304	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1720	2176	rundll32.exe	WerFault.exe
PID 2176 wrote to memory of 1720	2176	rundll32.exe	WerFault.exe
PID 2176 wrote to memory of 1720	2176	rundll32.exe	WerFault.exe
PID 2176 wrote to memory of 1720	2176	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:2304

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2176 -s 232
3⤵
- Program crash
PID:1720

MITRE ATT&CK Matrix

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Downloads

memory/2176-0-0x00000000001A0000-0x00000000001B2000-memory.dmp

Filesize
72KB

Download
memory/2176-1-0x00000000001A0000-0x00000000001B2000-memory.dmp

Filesize
72KB

Download
memory/2176-2-0x00000000001A0000-0x00000000001B2000-memory.dmp

Filesize
72KB

Download