b0560fd9603fadab36e24648e59b4e7f23ea64f322416278fbc5206e9732df30

Analysis

max time kernel
132s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 15:06

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General

Target

2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe
Size

65KB
MD5

a640aa470b55dde08abdf0d4d1cc8804
SHA1

a40293c7a0a0d6b60207281114c61d54abda57e0
SHA256

b0560fd9603fadab36e24648e59b4e7f23ea64f322416278fbc5206e9732df30
SHA512

02c264e0d48c3f43b2d36131b21e1a0ad59d7dbb90ea10ece6dc22efdf4298b2ebc1e094472293f3ac0ff5dbe2edcd4bab123f82d13d9dddf7c28e2a4200ce30
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29984wi:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023400-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023400-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2116	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 2216 wrote to memory of 2116	2216	2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe	84
PID 2216 wrote to memory of 2116	2216	2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe	84
PID 2216 wrote to memory of 2116	2216	2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_a640aa470b55dde08abdf0d4d1cc8804_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2216
- 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:2116

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
65KB

MD5
945870270b1acaca1fdfcdc1e78bb7ed

SHA1
737f64af5a8f82171247d5f99fe02bd01383b2c7

SHA256
0d70e9b021f31de510f1d99ad4e2fea3647b52798109e54a34423a8763155e24

SHA512
8d25f1eb263b127e30804b876c70a9869f360426854c784b2963a1f5a4005301383fbae41ab57229e7ed6934bebe09eab21f504e5a244e127f522173024b04ec

Download Submit
memory/2116-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2216-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2216-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2216-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download