c33c4fb041bc59735c3c7ae1a050912b82afa5ed768c64284ba45c53b704c321

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14-03-2024 13:49

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General

Target

2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe
Size

60KB
MD5

95e94bf1c9c312c925572d32b32a5ecf
SHA1

d248a8904b21e8388c15ac58c40706d3e021b580
SHA256

c33c4fb041bc59735c3c7ae1a050912b82afa5ed768c64284ba45c53b704c321
SHA512

6f4e4b9ec76f61dfea2a95ac2bcc0d234d19b8507d53c12dd8e6f949ba61daebff7d4fd163cf4875e807663713a02df213edb224ef2fe920abcdd6056f5051e6
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614M:BbdDmjr+OtEvwDpjMP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001224d-11.dat	CryptoLocker_rule2
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001224d-11.dat	UPX
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3068-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3068	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe

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 2188 wrote to memory of 3068	2188	2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe	28
PID 2188 wrote to memory of 3068	2188	2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe	28
PID 2188 wrote to memory of 3068	2188	2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe	28
PID 2188 wrote to memory of 3068	2188	2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_95e94bf1c9c312c925572d32b32a5ecf_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

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
60KB

MD5
2d3afa941c112e0570f65f01043f6f66

SHA1
a77c8670b888eb14f4b948c217dc054b0e97fa1c

SHA256
ff984bea69e9d542040dbf47f357ffd5533c26912f63d4d59b9f712964fad22c

SHA512
1a27018775cb565fada1c5d846391e4f1e38c199391476773ef1d1bfce8542ca3e00b6a3018de3e21e0c6d642209e463b602f6de87b7f916ce3da66239740b1e

Download Submit
memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2188-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3068-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download