dbdc678e85a82abe7ba952b49c4762481a3131a44f2098a47021fda7657f1009

General

Target

2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
Size

65KB
MD5

cafa1b722bfc9c0eadc65c74c8b257c7
SHA1

bb398c31ef863c493ab86d598506716dc105bcfd
SHA256

dbdc678e85a82abe7ba952b49c4762481a3131a44f2098a47021fda7657f1009
SHA512

9b7c457f8a6da3d8275968bfa6e574c916427080223359d897c9ca0b7357e4826ccd2af1fac9e01acbb0a395912bce81a2c733748d9cf7fcf0b2f4b8d9b15455
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5kJ7AK2R:zj+soPSMOtEvwDpj4kpmeLmQlAlR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224d-11.dat	CryptoLocker_rule2
behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224d-11.dat	CryptoLocker_set1
behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001224d-11.dat	UPX
behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp	UPX
behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2980	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001224d-11.dat	upx
behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp	upx
behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 1800 wrote to memory of 2980	1800	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	28
PID 1800 wrote to memory of 2980	1800	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	28
PID 1800 wrote to memory of 2980	1800	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	28
PID 1800 wrote to memory of 2980	1800	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2980

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

Replay Monitor

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Downloads

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

Filesize
65KB

MD5
f8981b8d63e0b03988109f0678c0b87e

SHA1
6e1f2d025bdbe0671087f90ca8a9027025170a48

SHA256
705fe0bebe159caf63a8ae6d4b4f264e87a38a04ee77cf70cbe86fb08660b5d8

SHA512
0eee3246c14bce8c02d15f9d18ac372a542a9544d224739d550ba3ab4b44e38547522071fe6fd8de3fb8f45c45c2be6383a0e52756847aa5144a65cd39306f67

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

Filesize
64KB

Download
memory/1800-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1800-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1800-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp

Filesize
64KB

Download
memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2980-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2980-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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