cfc3b89924427ebfbc3239ee201b66050b2d8fbd6365b842563dff86ec7cd7da

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 09:53

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General

Target

2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe
Size

45KB
MD5

e7538291ce50edb0de475e58a2d97425
SHA1

fbca3b9150a7f93638f0706f120d4ff9a4fe8433
SHA256

cfc3b89924427ebfbc3239ee201b66050b2d8fbd6365b842563dff86ec7cd7da
SHA512

96d2cff8a1ea7b5f97ba96e989b92cdf18b8d55c2e303b4b4ced1ef2308dd1fb5356e28e4cbafa6b9141c52770ab4a24050244647503740dc72a25844994d2db
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3b+NY:bm74zYcgT/EkM0ryfjd3WY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2184-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000235e5-13.dat	CryptoLocker_rule2
behavioral2/memory/2184-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3984-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3984	hasfj.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 2184 wrote to memory of 3984	2184	2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe	90
PID 2184 wrote to memory of 3984	2184	2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe	90
PID 2184 wrote to memory of 3984	2184	2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-24_e7538291ce50edb0de475e58a2d97425_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3984

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 --field-trial-handle=1276,i,7977653611488681184,6839495125838449898,262144 --variations-seed-version --mojo-platform-channel-handle=4380 /prefetch:8
1⤵
PID:3396

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\hasfj.exe

Filesize
45KB

MD5
8efd323a871d258e216107f1c5e8f212

SHA1
750147f4c7b026a4dc49d1853b76fd2d90c2b4f0

SHA256
903c4bb9b14a1e6e87f5360f7a7b34788790fd9c7a6d09f1b82bdaea662757e5

SHA512
34d1ba604fab4a745da9e0e515563ac0a08570bf7f6cac2a75392ce6972ba097cc0258d425a577bd49ca367f920262aa9adbc3d21e10b7171147fe228c881c39

Download Submit
memory/2184-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2184-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2184-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2184-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3984-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3984-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download