b71ad1688f924ff8ea830723005b9f37758941226f9ce66f0611d204be388707

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 07:49

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General

Target

2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe
Size

65KB
MD5

ff6a070d35a3f8347d0f0da50d03d487
SHA1

05dabf67c118cf951dbed86594c72d12146a543e
SHA256

b71ad1688f924ff8ea830723005b9f37758941226f9ce66f0611d204be388707
SHA512

c0b9e3c12af9173cc1a7247f30281d35694c26b1ef441098f3bdfa007dfa7771d669422ea9657cc4fabd68e820bc4b614292aa1b64c5024a9a1c0fa6f81c83ab
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5kJ7AK2c:zj+soPSMOtEvwDpj4kpmeLmQlAlc

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f00000001225b-11.dat	CryptoLocker_rule2
behavioral1/memory/2280-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1872-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1872-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000f00000001225b-11.dat	CryptoLocker_set1
behavioral1/memory/2280-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1872-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1872-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000f00000001225b-11.dat	UPX
behavioral1/memory/2280-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1872-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1872-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1872	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000f00000001225b-11.dat	upx
behavioral1/memory/2280-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1872-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1872-26-0x0000000000500000-0x0000000000510000-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 2280 wrote to memory of 1872	2280	2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe	28
PID 2280 wrote to memory of 1872	2280	2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe	28
PID 2280 wrote to memory of 1872	2280	2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe	28
PID 2280 wrote to memory of 1872	2280	2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_ff6a070d35a3f8347d0f0da50d03d487_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1872

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\misid.exe

Filesize
65KB

MD5
87f1bfe5e7af4a8d88e6a748bd68ff30

SHA1
3a59632c38ca8dd9673b355c2b975fbd5e4ea3c2

SHA256
d995eb43e88d0cdb8e5eee45837fa6d4808f1e9b69e637c945a4c26374a7aa9f

SHA512
484b13a773f1cec4d7d8d6e21c5b67a5d96bd385156314ed29c70f2f85bf45cfbb0c65257155dee8df671d5de95df2ee378b574331f6964086a076a89ca9d8dd

Download Submit
memory/1872-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1872-19-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1872-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1872-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2280-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2280-2-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/2280-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2280-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download