7463739c1f8a76bb17ccdd3545c039fbeb1bf6206226d1785ec6da6f6b8ad6c7

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
23/02/2024, 02:23

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General

Target

2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe
Size

68KB
MD5

1a8da4bf2decb881717e0ad5dbb26ef8
SHA1

2a79c30b6430ad10cc36d9bcad22b399e978808c
SHA256

7463739c1f8a76bb17ccdd3545c039fbeb1bf6206226d1785ec6da6f6b8ad6c7
SHA512

95c1bc82b2d7ee313c737a791d825f80df188e82d8e2f03e027cd728b3774137aa400dea33f38da63bf6787a61474f628ead11f470e396c9e16a09bceda23847
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU8:DW60sllyWOtEvwDpjwF85O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012249-11.dat	CryptoLocker_rule2
behavioral1/memory/2976-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2852-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012249-11.dat	CryptoLocker_set1
behavioral1/memory/2976-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2852-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2852	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2976	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_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 2976 wrote to memory of 2852	2976	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	28
PID 2976 wrote to memory of 2852	2976	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	28
PID 2976 wrote to memory of 2852	2976	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	28
PID 2976 wrote to memory of 2852	2976	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2852

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
68KB

MD5
74779734561ee86159bb43288d777952

SHA1
bd0d5e0d3ef4b7116d7736680f475aeb8fb030e2

SHA256
1811961c358ebbc9923a9932d2dc10335be698a27a247f4af32f8cf1ede5c156

SHA512
f78313b62eb7dc066205706ccf947f146cf3c68965ee86d340da55145c4a0f5f58066e79aa6fe7a664043d2047cf0c0582107774e367493d991bf94bcb529c57

Download Submit
memory/2852-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2852-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2852-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2976-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2976-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2976-3-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2976-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download