4e597a7b09369b747a757dc3fbd0dfa56977cbea2b47ad9b9ed645efcd91d7df

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 10:33

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General

Target

2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe
Size

86KB
MD5

e125d50f8f1d29dd74ecfcb41512dd2f
SHA1

2d88bdb175fbc795f57ca78c58e4491fb7a4d6ca
SHA256

4e597a7b09369b747a757dc3fbd0dfa56977cbea2b47ad9b9ed645efcd91d7df
SHA512

26a1fd04f9e332715af0afdf6b21cc85d970881771b4a725e56a8e4ac3ffd4599d8b0ab010f91bf1744b89663d71e5455a50f63d093d02d328ffa4eb2f0cbb48
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC+5:TCjsIOtEvwDpj5HE/OUHnSMf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4156-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1800-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/4156-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1800-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1800	misid.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 4156 wrote to memory of 1800	4156	2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe	81
PID 4156 wrote to memory of 1800	4156	2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe	81
PID 4156 wrote to memory of 1800	4156	2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-24_e125d50f8f1d29dd74ecfcb41512dd2f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1800

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\misid.exe

Filesize
86KB

MD5
155d9703b480ce91124382381ff82a86

SHA1
0b2db35b94e3eff11cc0ed7b1e097f1c376f0fc2

SHA256
feeea83dbcbd79caa1e6d3c800d2b959616d09ae21dc86e7172ae6cf5a57827c

SHA512
3bbccab5aaab054cb5205d6311e74bd42bfb660482b630c686b587e4ade339d6f393bb602643a2390f65f9887c8f9f1489ba5f5612204b50ed7a105f44e36924

Download Submit
memory/1800-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1800-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1800-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4156-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4156-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4156-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4156-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4156-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download