48b54903b620ebd27ac168f11b21b3917805535535c68d47276a05bdcc077e2b

General

Target

2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe
Size

81KB
MD5

35a2e54986fb3441cc9e60399f592bab
SHA1

4136080a80d6f45c2ec773b23b6c7cd2b9afee3f
SHA256

48b54903b620ebd27ac168f11b21b3917805535535c68d47276a05bdcc077e2b
SHA512

5c91bff4d5fca935840a8c49c0b3192d6f50428f238957eb26a49415bb5a49b02f6ca31e94c4a143e128310a55d19cc51ef9c4d301532bbbb866f702eebdfc19
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QpSxZ:zCsanOtEvwDpj0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1848-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1848-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/1848-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1848-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/1848-13-0x0000000000630000-0x0000000000640000-memory.dmp	UPX
behavioral1/memory/1848-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

3068 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe

pid process

1848 2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe

pid	process
3068	misid.exe

pid	process
1848	2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/1848-13-0x0000000000630000-0x0000000000640000-memory.dmp	upx
behavioral1/memory/1848-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3068-27-0x0000000000500000-0x0000000000510000-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 4 IoCs

Processes:

2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe

description	pid	process	target process
PID 1848 wrote to memory of 3068	1848	2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe	misid.exe
PID 1848 wrote to memory of 3068	1848	2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe	misid.exe
PID 1848 wrote to memory of 3068	1848	2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe	misid.exe
PID 1848 wrote to memory of 3068	1848	2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_35a2e54986fb3441cc9e60399f592bab_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1848

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
82KB

MD5
0db9b754c2ef71fd8299371977759519

SHA1
1116fad51f0ac2082327382b3b1522581b81449b

SHA256
4f454e92b27010e4ee9913e998fe526549034cf94bb2702af72a196b7d50740f

SHA512
a42d9732d36cd0337b262fcba6ef9deedd2ed239f486a95b3c0ddbee9795e6d2cf57f86b60e14ec68ba45489578fe22185dec31b6602a75aef8d48e23e9f4cb8

Download Submit
memory/1848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1848-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1848-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1848-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1848-13-0x0000000000630000-0x0000000000640000-memory.dmp

Filesize
64KB

Download
memory/1848-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3068-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3068-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads