71aed2c53024ce9a5872ed19c5a2624b4ab30a786b1a83ec7ce27f9d2ce0b9dd

Analysis

max time kernel
138s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2024, 15:42

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General

Target

2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe
Size

53KB
MD5

79a58ce55ecfdee5d2d3eaa4b877c589
SHA1

35a28a05ca26755abbe22df3f93209ebf2ab3c2c
SHA256

71aed2c53024ce9a5872ed19c5a2624b4ab30a786b1a83ec7ce27f9d2ce0b9dd
SHA512

734b087abb11fe4ae5c1ea30030c52806ea6f633d0fb9337f2aa1b6ea364c8a06989d4747068d7be9cd45eb709b290606791597b142f6a43a37cf91c4309ad19
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gn3zpPG:aq7tdgI2MyzNORQtOflIwoHNV2XBFV79

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002271f-12.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	2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_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
4468	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 3996 wrote to memory of 4468	3996	2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe	97
PID 3996 wrote to memory of 4468	3996	2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe	97
PID 3996 wrote to memory of 4468	3996	2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_79a58ce55ecfdee5d2d3eaa4b877c589_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3996
- 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:4468

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=3688 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4280

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
53KB

MD5
93551bd3500f20134c7b07ad1153f596

SHA1
39f99fb62a6401faa9116996bd487092a792458e

SHA256
05091469d57573af5d827a107f55f32ab52e152c0ec8f91cb7317b7c9c41ed9c

SHA512
bd8600c9ff64d2f240d37be386f1cad56c0640f196e790c96edd109d4533670033eb7e508c3bdb223d71233775f1ac37ee64dd7bbe274237f612caec03082d4f

Download Submit
memory/3996-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3996-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3996-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4468-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download