a59519ef944679f026218c3ee37ed03200efb88445fd8431d86bc2a0b84a8f67

Analysis

max time kernel
149s
max time network
153s
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, 16:25

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General

Target

2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe
Size

65KB
MD5

666837bf6241648d6b65161d6e42c09f
SHA1

2638c6b2c66cbc524daaded16188baac529373d9
SHA256

a59519ef944679f026218c3ee37ed03200efb88445fd8431d86bc2a0b84a8f67
SHA512

3c23e8b7816b1c72a937fe67ef4cb56dd02e42239b657c1699206b63da373391e49511341e52a1aa34c9f446f5ee731e29204d232ea07a465fd5c76cd5371665
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSAan:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2120	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 3344 wrote to memory of 2120	3344	2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe	82
PID 3344 wrote to memory of 2120	3344	2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe	82
PID 3344 wrote to memory of 2120	3344	2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_666837bf6241648d6b65161d6e42c09f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3344
- 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:2120

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
dd41fa56aab0d614fb11bd2c269f64a6

SHA1
fb1b1b59f90ef2a702c9db4bb92012d67cf9bda3

SHA256
cb5f0057e74486504b04f4d23903e42ac255d4a650e057f37b5e98e9bce2ea7e

SHA512
04645e002e616e588e3acffa084c3676add093d61c704e3238e9275403384d69c75e0309a94ef1766f0046cdcb83edeb209bfb8daf1c2f1941aae3e6b794f257

Download Submit
memory/2120-25-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3344-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3344-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3344-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download