ae2b174e44985f715ad86e38f1c62adb60f86ff6ca3a52042b7ec96d9d2dd464

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/01/2024, 15:24

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General

Target

2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe
Size

57KB
MD5

27c04bfccd3b08eae6a1183673095521
SHA1

c3c12dd7a1238aa91abeb671fe0327dbcc5ae188
SHA256

ae2b174e44985f715ad86e38f1c62adb60f86ff6ca3a52042b7ec96d9d2dd464
SHA512

929013c460ed083dd3f1c9df75a0569b7c5a74e42e4c249059c4ea3c1791b0629b6726d4accfc036f2d095291a6944f78e9695e1382b2bc4b86e37abaa5a3528
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PT+:BbdDmjr+OtEvwDpjMg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012203-11.dat	CryptoLocker_rule2
behavioral1/memory/3020-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2376-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2376-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/3020-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2376-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2376-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012203-11.dat	UPX
behavioral1/memory/3020-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2376-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2376-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2376	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3020	2024-01-26_27c04bfccd3b08eae6a1183673095521_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 3020 wrote to memory of 2376	3020	2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe	28
PID 3020 wrote to memory of 2376	3020	2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe	28
PID 3020 wrote to memory of 2376	3020	2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe	28
PID 3020 wrote to memory of 2376	3020	2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_27c04bfccd3b08eae6a1183673095521_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2376

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
57KB

MD5
4fb5dfd17d8738bc28150c7d84662b76

SHA1
6ead1828466bcb1ef05e1a2c8693970f22f356e8

SHA256
e1b30e82522a68cee1ae1c02b09d5553927b4956111206dc85fb49fadfa8d4c2

SHA512
1b14fe93beebb030c3a38da69935f31a495205ae5f62e1a2339afb699cb192fd07eccdcb13f21833d03c1866c8e36f4c350974a20b56fc2231fe8b2a4f751837

Download Submit
memory/2376-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2376-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2376-22-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2376-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3020-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3020-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3020-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-16-0x0000000001CF0000-0x0000000001D00000-memory.dmp

Filesize
64KB

Download