9eda1065256ba62f008d2ca5678a06b1695eda7bf6a3e52beb40f13131262f57

General

Target

2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe
Size

98KB
MD5

d2a988857fcb6618b1f46b4fe75d7195
SHA1

61d294b863caa7c3e132735a1cf1a86823798ba3
SHA256

9eda1065256ba62f008d2ca5678a06b1695eda7bf6a3e52beb40f13131262f57
SHA512

b7b4d74aa97878dbe5533aea5fbaae71403895bfdd2c9f553657276d52248b528ff24afbaee815e8e0944e2337a3698eaf45ac539a1e335ca3dd0f1de7823aeb
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuvQfa:zCsanOtEvwDpjR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4252-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/4252-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1772-53-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4252-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/4252-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1772-53-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4252-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral2/memory/4252-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1772-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1772-53-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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

Processes:

2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1772 misid.exe

pid	process
1772	misid.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4252-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral2/memory/4252-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1772-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1772-53-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

Processes:

2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe

description	pid	process	target process
PID 4252 wrote to memory of 1772	4252	2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe	misid.exe
PID 4252 wrote to memory of 1772	4252	2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe	misid.exe
PID 4252 wrote to memory of 1772	4252	2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d2a988857fcb6618b1f46b4fe75d7195_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4252

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
98KB

MD5
bef4be2ca32f7485e28696b7ad22bb76

SHA1
a6fc58a0d51dbe72360e37bd1ca8fccc791c22cf

SHA256
841e91ef108ce5ef4361820f1232dcae56792dee6c376497bf05b6ebfb084b7f

SHA512
da27bd18eb63ba1109360b8ae0607df860004c2b27d70a841d983d95fbf76bc5cd99876a9aa99477238f86ad61cbcf7daf9322575bbcd75c45b341c9864c6026

Download Submit
memory/1772-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1772-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1772-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1772-53-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4252-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4252-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4252-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4252-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4252-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads