a24d73d1408513bdca13efbe99ce83bc89d392e9e3199bb16e71eb642e449bdd

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 22:26

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General

Target

2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe
Size

69KB
MD5

1eef6a3d82cfffa965ee482d2d4fe65d
SHA1

14e367a4d1d0387a5920825ed6cb6d110acfca71
SHA256

a24d73d1408513bdca13efbe99ce83bc89d392e9e3199bb16e71eb642e449bdd
SHA512

675ff457a4c79c35ad7a9e3192479c5b5f31425adb9290e91cc86b5460937107756149bcae3d3ce05a9d1fcb899ba3f81b84fa0ebc041e3afa37986d84a9ed3e
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQApI0A:78SEOtEvwDpjWYvQd2PQ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2132-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2064-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2132-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012286-11.dat	CryptoLocker_set1
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2064-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2132-1-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c000000012286-11.dat	UPX
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2064-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2064	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2132	2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2132-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c000000012286-11.dat	upx
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2064-26-0x0000000000500000-0x000000000050F000-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 2132 wrote to memory of 2064	2132	2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe	28
PID 2132 wrote to memory of 2064	2132	2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe	28
PID 2132 wrote to memory of 2064	2132	2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe	28
PID 2132 wrote to memory of 2064	2132	2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1eef6a3d82cfffa965ee482d2d4fe65d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2064

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

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Downloads

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

Filesize
69KB

MD5
7d9b1dc839ca13abaf43d1f606632252

SHA1
85991aacea8e5bf7ab43e34d94117f8c753cbc9d

SHA256
eb1efd8932fe2611d1f706dcb6ec7aed12d8781a08bbe5994d6d74cb95a7ee83

SHA512
3b03ffa0a672507e3e5be3fb85f13ebd888b91ceb7aab55aa1a56a7302225a56e8670ffbad59f6d5488dd711d603f4424f77f0f31cc0f9201482eb207db91665

Download Submit
memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2064-18-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/2064-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2064-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2132-8-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2132-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2132-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2132-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download