7485c2a95e93ac85c8561742085e70e27aa1cc9612df7111f2bf723e38ea4742

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/01/2024, 23:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe
Size

79KB
MD5

e31d45b24364560e6a6c41dc1ece1a98
SHA1

05af94b1d2d2b2843f033032c38064763ee99e1a
SHA256

7485c2a95e93ac85c8561742085e70e27aa1cc9612df7111f2bf723e38ea4742
SHA512

0d9b6e4027aa636e998fe6ebc92512a77b04a0d0b1d21bd5d5ca4380ac566eef0fcd2933c3ee481f99bed7f46567ebbb6b638b3f85bff8a32a3591484ee39fa3
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7pBlqrr1HBJooSeKzu1adyBl:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyz

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1672-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000122c9-11.dat	CryptoLocker_rule2
behavioral1/memory/1672-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1672-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00070000000122c9-11.dat	CryptoLocker_set1
behavioral1/memory/1672-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1672-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00070000000122c9-11.dat	UPX
behavioral1/memory/1672-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2656-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2656-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2656	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1672	2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1672-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00070000000122c9-11.dat	upx
behavioral1/memory/1672-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2656-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2656-26-0x0000000000500000-0x0000000000510000-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 1672 wrote to memory of 2656	1672	2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe	28
PID 1672 wrote to memory of 2656	1672	2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe	28
PID 1672 wrote to memory of 2656	1672	2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe	28
PID 1672 wrote to memory of 2656	1672	2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_e31d45b24364560e6a6c41dc1ece1a98_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
80KB

MD5
74f9313818847e8f98d1d3d39dd276f4

SHA1
ee6b218680c5b3063689bc9525996595cdf0d9dc

SHA256
f5492d59e69421065f20428a7f820c86798d78786c21cb5c68ed72c3bc0a5d5b

SHA512
a9b8f499991182099c3a7c8b8fa44281385124147a43ff56e0bb07a9b1399211a925a42d84ee74056cd1f8d13f95af2b5d3cd744bbc022f320c7f5bf492d6dde

Download Submit
memory/1672-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1672-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1672-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1672-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1672-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2656-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2656-18-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2656-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2656-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download