406d0c59b375f6e61721f08da88e8c6aa03abd24e4ec6b70a0bd9fa426ff8921

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 06:35

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General

Target

2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe
Size

102KB
MD5

949f1a38aed5b7542c71c46d603f2d17
SHA1

29b04408be1a3e10ae128a0fd951ab2f0c22769e
SHA256

406d0c59b375f6e61721f08da88e8c6aa03abd24e4ec6b70a0bd9fa426ff8921
SHA512

eb140ec55074afccce37911b93dc44a7f17a4f5175b97917a8cb674c9ab9e5942b0f4776bd5eb346a1caf22fb6aaeab085316b126a3278f0828de702be06bd5a
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMbm:xj+VGMOtEvwDpjubwQEIiVmkxv/mm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001fc40-13.dat	CryptoLocker_rule2
behavioral2/memory/2352-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1800-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1800-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001fc40-13.dat	CryptoLocker_set1
behavioral2/memory/2352-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1800-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1800-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001fc40-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2352-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1800-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1800-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-25_949f1a38aed5b7542c71c46d603f2d17_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 2352 wrote to memory of 1800	2352	2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe	89
PID 2352 wrote to memory of 1800	2352	2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe	89
PID 2352 wrote to memory of 1800	2352	2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_949f1a38aed5b7542c71c46d603f2d17_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2352
- 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
102KB

MD5
b50849048b4b39cabb5123d026dcd738

SHA1
e19525f59e7042541d5708fd04d2563b8de00ddd

SHA256
2de4634cfc7113de753b851d8813c24a917ca0484a7cc55741bfe6e34fc625fb

SHA512
892b1e27de2ed7bcfb5e85207dab6bd3081ee42ae6d3ab0d71df3fd43d17428e35255b0e885b2acf519d1eb8f647adeebdb90d3b0a5b7ff1098fff10fb75c370

Download Submit
memory/1800-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1800-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1800-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1800-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2352-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2352-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/2352-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/2352-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2352-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download