22987c398c668599e79f7f89a3d6b92a9c9f2d9dec98cbbea2e1ab5e6d3edbff | Triage

Analysis

max time kernel
143s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 11:34

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General

Target

$PLUGINSDIR/nsJSON.dll
Size

7KB
MD5

b9cd1b0fd3af89892348e5cc3108dce7
SHA1

f7bc59bf631303facfc970c0da67a73568e1dca6
SHA256

49b173504eb9cd07e42a3c4deb84c2cd3f3b49c7fb0858aee43ddfc64660e384
SHA512

fdcbdd21b831a92ca686aab5b240f073a89a08588e42439564747cad9160d79cfa8e3c103b6b4f2917684c1a591880203b4303418b85bc040f9f00b6658b0c90
SSDEEP

96:Zw8NZ0x0OOdzJt0TwYKj7W/NYDNd9fQ6blfW+KrWC69r7ncnrD6Qdm:6e/7vAmrHblfW3iCmDcru

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
behavioral16/memory/1300-0-0x00000000753B0000-0x00000000753BA000-memory.dmp	upx
behavioral16/memory/1300-2-0x00000000753B0000-0x00000000753BA000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2600	1300	WerFault.exe	91

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 1300	3076	rundll32.exe	91
PID 3076 wrote to memory of 1300	3076	rundll32.exe	91
PID 3076 wrote to memory of 1300	3076	rundll32.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsJSON.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsJSON.dll,#1
  2⤵
  PID:1300
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1300 -s 600
    3⤵
    - Program crash
    PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1300 -ip 1300
1⤵
PID:640

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3816 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:3252

Network

MITRE ATT&CK Matrix

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Downloads

memory/1300-0-0x00000000753B0000-0x00000000753BA000-memory.dmp

Filesize
40KB

Download
memory/1300-2-0x00000000753B0000-0x00000000753BA000-memory.dmp

Filesize
40KB

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