27e8c821e6360597fb400dc2513d1f7a98eb26a3fe58ee4f2bcf0cbc2a636da9

Analysis

max time kernel
142s
max time network
157s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 15:44

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General

Target

2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
Size

47KB
MD5

a2a99b5d7bb819460524ebc45344ae4e
SHA1

1cdc53a7a133b4b30c91f83f1b4073653d12ec19
SHA256

27e8c821e6360597fb400dc2513d1f7a98eb26a3fe58ee4f2bcf0cbc2a636da9
SHA512

d73c00ccd0744680e1e5a202d429ad81735796fae464fd96d477e38b1c5375928d07797952aef9730f01896cf1da237a3d659e01e6fbdb727f78453cfa011734
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo22u:qmbhXDmjr5MOtEvwDpj5cDtKkQZQJ1Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001227d-11.dat	CryptoLocker_rule2
behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000900000001227d-11.dat	UPX
behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp	UPX
behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2624	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3044	2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_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 3044 wrote to memory of 2624	3044	2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe	28
PID 3044 wrote to memory of 2624	3044	2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe	28
PID 3044 wrote to memory of 2624	3044	2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe	28
PID 3044 wrote to memory of 2624	3044	2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2624

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
47KB

MD5
5275ad029ebb9ec3dcbee0ee6da2af56

SHA1
376b99fef4d6c817b870cd43ea9df135a4960604

SHA256
e62de68ff8d93930557ebeb9c1bc780db41486b36f1e4eebfc9747881cc7e150

SHA512
49cfdbe59838bac65d21a2dbe5f293e2e1fcd0926e0065c18c062056f598ac890609ad44a5d84e27a8176bbdc1edfc0b8c28b07917b5415d5af1ee57f48b9f99

Download Submit
memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2624-19-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2624-21-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3044-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3044-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp

Filesize
64KB

Download