4b7217983e7995b3378f9118351340f3cf232a7639ae2a0df93d19eb6abbaaed

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-04-2024 19:36

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General

Target

2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe
Size

39KB
MD5

a2bc6448fb66ebfdde6af1dc3ddfab17
SHA1

964ae2d884ca299868b59609d25a5fce9719063a
SHA256

4b7217983e7995b3378f9118351340f3cf232a7639ae2a0df93d19eb6abbaaed
SHA512

1dd546ed1445685f2130dd1b2153d745fbfdc48d06a12934e9942f6e6b3946b8f70e6de42c966ce32de287fcf116e9982702770de5bcd9e2c08bec061118bf0f
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axzYF1:V6QFElP6n+gMQMOtEvwDpjyaYalS1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012246-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012246-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2216	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_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 2272 wrote to memory of 2216	2272	2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe	28
PID 2272 wrote to memory of 2216	2272	2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe	28
PID 2272 wrote to memory of 2216	2272	2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe	28
PID 2272 wrote to memory of 2216	2272	2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_a2bc6448fb66ebfdde6af1dc3ddfab17_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2216

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
39KB

MD5
16379a587dba861a0576a7a41155b0a0

SHA1
b79fb53811b0a305bcfc482250232021cc87ea16

SHA256
4ac538b6ec37b80e8075b3f3ab8c79e498484f613e9e4b49451e32549bd48229

SHA512
7afde7d69af591d4c2367b4400fde78f7b6972a9e142f9b105eb44f3b125efbf97094d50f7883b0d038b4256533064a7fd50c2aef59b5ac65cc16a567298c7f2

Download Submit
memory/2216-15-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2216-22-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2272-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2272-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2272-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download