1442eca75c1d4c1e5afe0cec593be9a430ac8adced18b2adad56b8108fef51bd

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 15:33

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General

Target

2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe
Size

101KB
MD5

3c1f45f7d394bcad38e350022f84b7bf
SHA1

550ff67b62a819b3fad06ba436f6ee367de216b4
SHA256

1442eca75c1d4c1e5afe0cec593be9a430ac8adced18b2adad56b8108fef51bd
SHA512

794031dcaf2d244b4d889b2bb4f3ef08ea6ecaab0b93d197b7ad3c66e9a91fb08b91927a57b62662381bd579b031865d6e593b23913b301503e65c25a9608a9d
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2nNd:xj+VGMOtEvwDpjubwQEIiVmkxv/TNd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3504-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002315f-13.dat	CryptoLocker_rule2
behavioral2/memory/3504-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3504-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b00000002315f-13.dat	CryptoLocker_set1
behavioral2/memory/3504-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3504-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000b00000002315f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3504-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	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 3504 wrote to memory of 3032	3504	2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe	86
PID 3504 wrote to memory of 3032	3504	2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe	86
PID 3504 wrote to memory of 3032	3504	2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_3c1f45f7d394bcad38e350022f84b7bf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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
101KB

MD5
72736216a0993ff2246b93ae0e8817f1

SHA1
d0070ed306a47821cb074042fc33409b5941651b

SHA256
d5ea9cf70eb69107f6fc936e4fa00a807a7b7692ecd392ced403ff17d7635daf

SHA512
e9d62ad71597ab054718b10bdd9c3a900c48d8bdeb0ad30921bfa357c87765e1fbf3c3b7096d3509b95a840b2954021add321a67968b63b38bcf0eeaa3f6f13c

Download Submit
memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3032-22-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3504-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3504-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3504-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3504-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3504-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download