e99c095d7e964c2ba0352b131847ec5dec681333e988203370e07f502a2927bb

Analysis

max time kernel
93s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02-06-2024 04:42

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General

Target

2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe
Size

44KB
MD5

0d77617cb1a68b0efa497959413e6fa6
SHA1

500c918047aa2a884a56d8d5646263b82a5bfec3
SHA256

e99c095d7e964c2ba0352b131847ec5dec681333e988203370e07f502a2927bb
SHA512

050af5abae93101bca78a869a4df73e6ce6cca90b0c733cc97a5041cd8a2d0b2c176c2167bde2f90c6f1b2a8a14013db02679456850d7dd09bbb0530d44d4121
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxh:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023400-15.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023400-15.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	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1224	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 1448 wrote to memory of 1224	1448	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	83
PID 1448 wrote to memory of 1224	1448	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	83
PID 1448 wrote to memory of 1224	1448	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1448
- 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:1224

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
44KB

MD5
dada58d59be9231868416728be425d83

SHA1
a58181e5d8fe5e51d5b52cacc7ce70b7a4535a77

SHA256
cee1170d547050d2d56677ba6f4f7e28ece03c23c0bc7e6fb8236b923054dd1f

SHA512
ce75406d926be50e11290ec06d84bce1f7d9db03dba8fe24812d9fba3e78afb58829dcd662a3b7713873419bee40c69ca03d0646c2f470e0fb9c06de45b94c76

Download Submit
memory/1224-25-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1448-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1448-8-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/1448-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download