6785b0cf829a8acce7c4b5e6138cf2fc57909728526f6c0c2f24594b4d262dd2

Analysis

max time kernel
149s
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
09/03/2024, 12:38

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General

Target

2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe
Size

57KB
MD5

e26ff80798321ba13a6ac3105623c82a
SHA1

c80950fbfaa094eaef3e7a2164afe62f8c7df1f8
SHA256

6785b0cf829a8acce7c4b5e6138cf2fc57909728526f6c0c2f24594b4d262dd2
SHA512

65a394df5647b606f1f14879b7091d6c0f3e172d7b13059190050da1525d20a5cc14c76baffe244e5050d6eb515b48e2fedb520aeb528140bc103463a1858722
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj6Eit:xj+VGMOtEvwDpjubEgC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4980-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023039-13.dat	CryptoLocker_rule2
behavioral2/memory/4980-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/552-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/552-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4980-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023039-13.dat	CryptoLocker_set1
behavioral2/memory/4980-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/552-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/552-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4980-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023039-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4980-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/552-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/552-27-0x0000000000500000-0x0000000000510000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
552	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 4980 wrote to memory of 552	4980	2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe	85
PID 4980 wrote to memory of 552	4980	2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe	85
PID 4980 wrote to memory of 552	4980	2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_e26ff80798321ba13a6ac3105623c82a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:552

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
57KB

MD5
2108a2fb6db1e3ada8493e11c0b7eb4a

SHA1
fe2d58422dadffadb76c0ff642c0772c6a30588a

SHA256
06a53de3a73f181231dd4776db63ce76b541b9144d60c54eed737a76d8bfd7f6

SHA512
5219dfce08802d32e096c3de9e23a99b7816ad9e4851a74ae6e5a96572c597ca482c3df9811e9de1001e570bb51b5f314082b60c84b276e19a4ac3f9c90bb574

Download Submit
memory/552-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/552-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/552-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/552-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4980-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4980-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4980-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4980-3-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4980-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download