95a7a6dbf1c098ac4095035d48670fa68add5411ec26b83f3748b89fc51d9e48

Analysis

max time kernel
135s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:26

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General

Target

2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe
Size

64KB
MD5

298f1915bb0e3d75649fc3930ddb1e23
SHA1

9276fb9ed5e9f1f8fb67d915a9967b460063a5cd
SHA256

95a7a6dbf1c098ac4095035d48670fa68add5411ec26b83f3748b89fc51d9e48
SHA512

37f0e7f75f02cff07f3a2b0a763c1d3d6b803e99c5e14aab157cace517495c86f56af926e6ab298c2877a33d54185289fca9328a0fa8227ae9bfd1d1514d6957
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Wu:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	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

Processes:

hurok.exe2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe

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	2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2372 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2372	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe

description	pid	process	target process
PID 2764 wrote to memory of 2372	2764	2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe	hurok.exe
PID 2764 wrote to memory of 2372	2764	2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe	hurok.exe
PID 2764 wrote to memory of 2372	2764	2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_298f1915bb0e3d75649fc3930ddb1e23_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2764

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:2372

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
64KB

MD5
7202ea27249e87b5bbd52a6dcb8ac320

SHA1
966edc0ccc5088218036e706ea0358c102bb2036

SHA256
82b24c9b77137adb9faacd0e582710ffc0e3bbfb47160fd32bf2736e86958cff

SHA512
5942de81fe8582f493a650da3ba7106daa7a3e17281c018bddeb5fe996b05fb7ceef62141dced8bf1864eb43e5f5f88e1ce6594297f55c1f9ac6887102c5ea2e

Download Submit
memory/2372-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2764-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2764-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2764-8-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download