ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf

Analysis

max time kernel
127s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 03:22

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General

Target

ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe
Size

47KB
MD5

94f2f300924478cd1f263e4286cdd0a1
SHA1

91f554b16095c45364e6f2a7aff7c1fe232da617
SHA256

ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf
SHA512

045d3c4a3fa083b6fdbf50fb4cd414b2baf216c6d257d32336c4370c4371eba16b9cea96173a433f31836b190e07f23cbf859bf547de4e51fc22106adcfc4d4f
SSDEEP

768:JGuGSdMxdKhsttw9o8SHTMfmxA6v9XoGOVcI7QLsIcE4W6Tb:wrxshsnwffmxA6veGOVcI7esIF4WS

Score

9^/10

Malware Config

Signatures

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/5108-0-0x0000000000400000-0x000000000040D000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5108-1-0x0000000000400000-0x000000000040D000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00090000000234fc-6.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4568-10-0x0000000000400000-0x000000000040D000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe

Executes dropped EXE 1 IoCs

pid	Process
4568	pdfupdate.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 4568	5108	ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe	94
PID 5108 wrote to memory of 4568	5108	ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe	94
PID 5108 wrote to memory of 4568	5108	ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe	94

C:\Users\Admin\AppData\Local\Temp\ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe
"C:\Users\Admin\AppData\Local\Temp\ef55fedfa0dd58c12970175f3318fd726cc472fcbdaa62a6d68dbb6867f34bdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Users\Admin\AppData\Local\Temp\pdfupdate.exe
  "C:\Users\Admin\AppData\Local\Temp\pdfupdate.exe"
  2⤵
  - Executes dropped EXE
  PID:4568

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 --field-trial-handle=3500,i,11123149219465304642,109907309914991071,262144 --variations-seed-version --mojo-platform-channel-handle=3852 /prefetch:8
1⤵
PID:1636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pdfupdate.exe

Filesize
47KB

MD5
749dd4fa0824320e348a83f44b703694

SHA1
1067f61e9012b92079b02c36def94a933456d762

SHA256
82c42968998c21efb79f80710ef36adfee280f29f1605b4b9d32323733b49524

SHA512
79d7cb8a30a7ad3f37bd8d1897d04383e53493224a7fcc610399e28318a71e1c61140b2077e59168581d3f997a6f38932f3295044403de7bd6b6154305497cba

Download Submit
memory/4568-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/5108-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/5108-1-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download