c3f8a9edcc8005a4daf85290960b535bc6fbed225062adfd8b20e5cec40dacf7

Analysis

max time kernel
150s
max time network
169s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/04/2024, 05:07

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General

Target

2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe
Size

60KB
MD5

f355bd5963b8f63dcf62c2671bef1316
SHA1

9897542257e152d8be34812e9c7cda32ad882cff
SHA256

c3f8a9edcc8005a4daf85290960b535bc6fbed225062adfd8b20e5cec40dacf7
SHA512

544563f91343c609f8dd791dd5d59920b1b0b808de9ab4228779d564c3a24926e21e713e15c061ff4d77659e1601c92f7a93ed9e7bf4843ee7df01d027908575
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIM:TCjsIOtEvwDpj5HE/OUHnSMu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2988-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122e2-11.dat	CryptoLocker_rule2
behavioral1/memory/2988-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2688-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2688-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2988-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d0000000122e2-11.dat	CryptoLocker_set1
behavioral1/memory/2988-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2688-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2688-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2688	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2988	2024-04-06_f355bd5963b8f63dcf62c2671bef1316_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 2988 wrote to memory of 2688	2988	2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe	27
PID 2988 wrote to memory of 2688	2988	2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe	27
PID 2988 wrote to memory of 2688	2988	2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe	27
PID 2988 wrote to memory of 2688	2988	2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2688

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\misid.exe

Filesize
61KB

MD5
e4fe5ec12e25df86c20786d7ba561448

SHA1
05ee381dce0099e8211bfe23bf43bc44cc460ee3

SHA256
92cad83c0231de663ab942ef06d424e3945225823b656f18667a6006700f5fd0

SHA512
6547e82f7e811c92872683c15a6ca66a7fae2d66c44c9dfc16868e3557634d4d7062a20a4722ce0e9246705ff226fc30a3307ae66665af59980c5844a7beabcf

Download Submit
memory/2688-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2688-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2688-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2688-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2988-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2988-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2988-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2988-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2988-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download