91543d070d4374519112758246bae5b4bc544c61fe37553bacd2734177b61672

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 04:48

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General

Target

2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe
Size

29KB
MD5

48b9d38fa13b61fa69a684807f2aadf8
SHA1

f025c60c1ed5ee07681663c52ef710b8ae1786c4
SHA256

91543d070d4374519112758246bae5b4bc544c61fe37553bacd2734177b61672
SHA512

d8b9e1135328482e87e1b5006d05d8b5416ab1625445a64b4f5ea8a23a67168715b42f4f8ecbc2c926af169a1eb2c1d875c5d7bf07948b994ce7c1940095b23a
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJN:bA74zYcgT/Ekd0ryfjQRSj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002332e-12.dat	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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4580	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 3036 wrote to memory of 4580	3036	2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe	96
PID 3036 wrote to memory of 4580	3036	2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe	96
PID 3036 wrote to memory of 4580	3036	2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_48b9d38fa13b61fa69a684807f2aadf8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4580

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=3996 --field-trial-handle=2256,i,18272763564106695635,11201593968620719822,262144 --variations-seed-version /prefetch:8
1⤵
PID:1164

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

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Downloads

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

Filesize
29KB

MD5
aa63919613faf3e37d952b2037c73478

SHA1
515c3fc532730ef0aaaeddec4c5f8cc31c2d5af3

SHA256
f8ceb6f5a85892e3d17e640b9c72032e7dbcae77fb6c531907e2223a66bcaa3a

SHA512
a24f6c17c2cb90bd4e07a976aabadad90186ac7397353380a29514fa1c0db6fca4212a58ebe0cfb1fc219d38e2468b22b4a16f1e107c89ddccfe6414de7c5ce7

Download Submit
memory/3036-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3036-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3036-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4580-18-0x0000000002590000-0x0000000002596000-memory.dmp

Filesize
24KB

Download
memory/4580-17-0x0000000002560000-0x0000000002566000-memory.dmp

Filesize
24KB

Download