ced6ec3fd9c9428cfbcf6aeacfe4727438900ff9118b3b560bfe2f8668903ec1

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 13:42

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General

Target

2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
Size

82KB
MD5

672cbd9ad71ad85c9dcce93e3de93766
SHA1

c1651030b2776893a84faeec62c56e20a0a58f53
SHA256

ced6ec3fd9c9428cfbcf6aeacfe4727438900ff9118b3b560bfe2f8668903ec1
SHA512

2045c64adee57086f36be1a129b41fc66bdedea2baefcbfc493f1c403df9ca9c904aeb20032194642c6675e68b77fffdf7472b10ab71c62859f86aab2254ed13
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7G3:T6a+rdOOtEvwDpjNK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012330-11.dat	CryptoLocker_rule2
behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012330-11.dat	CryptoLocker_set1
behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012330-11.dat	UPX
behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2528	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3056	2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012330-11.dat	upx
behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-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 3056 wrote to memory of 2528	3056	2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe	28
PID 3056 wrote to memory of 2528	3056	2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe	28
PID 3056 wrote to memory of 2528	3056	2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe	28
PID 3056 wrote to memory of 2528	3056	2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2528

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
82KB

MD5
c8e4e21839afbefd93543f2cd532cf57

SHA1
e8504c4d2ec4e593555fd290ec3ecc5cdc02d4aa

SHA256
8bfe3493061f1970e8203e3a0a099da850efff8c615099fe21ad693a38015deb

SHA512
f2e7b056017fdaf1c818ec19d6f6f54f31a78592aa2b44c6c338209cc15b0d2dee2f5edf9a411e81b6561baa0c62467289b60cc5f1b271e1c3b8628c12e0ab6f

Download Submit
memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2528-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2528-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3056-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3056-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-15-0x0000000001D30000-0x0000000001D40000-memory.dmp

Filesize
64KB

Download