bbe400547f508b7e9e7fd60c44cac8b1b67c00c24cbcd94590d18af0a7f3df98

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
18/01/2024, 22:38

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General

Target

2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe
Size

87KB
MD5

380acc8a2a6ab1aa5544b6fab0411b64
SHA1

622ade6cc4e5660c033098d6e92fd96460b51e9e
SHA256

bbe400547f508b7e9e7fd60c44cac8b1b67c00c24cbcd94590d18af0a7f3df98
SHA512

f06ef5c0502fa4bcb9b75d8d73f0d0a14fa77cbace54b5fa20c3775b9ea70450ce6c0b3eb37ec8c6e4b9e18540e0339b598b7b8ccc5f3615deab1d6c8db35905
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIJ/n:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2380-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2416-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_set1
behavioral1/memory/2380-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2416-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x0009000000014120-11.dat	UPX
behavioral1/memory/2380-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2416-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2416	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000014120-11.dat	upx
behavioral1/memory/2380-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2416-26-0x0000000000500000-0x000000000050F000-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 2380 wrote to memory of 2416	2380	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	28
PID 2380 wrote to memory of 2416	2380	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	28
PID 2380 wrote to memory of 2416	2380	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	28
PID 2380 wrote to memory of 2416	2380	2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_380acc8a2a6ab1aa5544b6fab0411b64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2416

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

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Downloads

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

Filesize
87KB

MD5
7ca0ef4a8c5adfbe72c63f4f6fc1a310

SHA1
cde68d3a5fc18ccbc168e98cd52db5065eeacd02

SHA256
43b08b0f52b2e57c2dd4020b7213eb9f00ed00917a56b3a8a4ed68a915b40457

SHA512
949eef6fc65d164f9ffc62e59588d268d046d708ca476a17782d5902e9205140c2f207c483aec68047f556bbabd218d6ab07438484b2138a49af178b249bb7a0

Download Submit
memory/2380-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2380-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2380-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2380-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2380-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2416-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2416-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2416-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download