11815151410d57d714f4cf3c27885f2891fd290bf0668d062822b9fe931e3671

Analysis

max time kernel
142s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 20:28

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General

Target

2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe
Size

32KB
MD5

2fbbb83d8d5d7d7cf0ff2d107a71f7ab
SHA1

1cca1c1060a75a2e32122dadf7214576d4b554fa
SHA256

11815151410d57d714f4cf3c27885f2891fd290bf0668d062822b9fe931e3671
SHA512

9b2a761080c13ecb000778d95a60f83ca8eaf61165a463539978de76cf023e14d31f8b2056f05914b7c7125434ab4d811dcc65325007f2474ee0017f09b9440e
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7xFn:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-14.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-14.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3124	hurok.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 972 wrote to memory of 3124	972	2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe	101
PID 972 wrote to memory of 3124	972	2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe	101
PID 972 wrote to memory of 3124	972	2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_2fbbb83d8d5d7d7cf0ff2d107a71f7ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3124

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=3864 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:4544

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\hurok.exe

Filesize
32KB

MD5
8032fdbea894ec8d386eb801666d25e6

SHA1
f3e372911779550d7c828dcf78cc125935ab7d07

SHA256
fee9cff9708fa9ecaa44b6734523f8c54d9f62c7b1c076f4b61ae23a2476f710

SHA512
d85d2204ddc0e9b4141b987eefd196324856f6c4d099e0d60ab680d4ef3b74d12bf51f52cef9009c01b91fee68935ff8738001b0510901ce003ba2d503e822c7

Download Submit
memory/972-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/972-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/972-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3124-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download