e782a6f24e22c0ced04a061a91b34d26e23722024949e36fe3eb160e5bfadee1

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18-03-2024 10:34

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General

Target

2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe
Size

69KB
MD5

5ed14f72f54b5471cf2d818cffbfc55a
SHA1

740573e69c83acdb118859e5ef0a7ec5ac5f4e82
SHA256

e782a6f24e22c0ced04a061a91b34d26e23722024949e36fe3eb160e5bfadee1
SHA512

e7f097fa4174ab20f7a453c5ad31adb829b34a25b85b02a0fc2a3cf24b3c0e3f7456e4d08f5ae40a2806ba306a928727f48c2ff58239d7565a5114dfa54e7836
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUr7:DW60sllyWOtEvwDpjwF85Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2404-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023223-13.dat	CryptoLocker_rule2
behavioral2/files/0x0008000000023223-15.dat	CryptoLocker_rule2
behavioral2/memory/2404-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2404-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023223-13.dat	CryptoLocker_set1
behavioral2/files/0x0008000000023223-15.dat	CryptoLocker_set1
behavioral2/memory/2404-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3648	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3648	2404	2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe	91
PID 2404 wrote to memory of 3648	2404	2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe	91
PID 2404 wrote to memory of 3648	2404	2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_5ed14f72f54b5471cf2d818cffbfc55a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
69KB

MD5
316d68e27e2d91274036f25dbd165c1b

SHA1
f6602a165e1f29a07b5af2478aef601936785295

SHA256
b1e486ccf31296e5b894b285da7ea81cb5758b77df06cd1d82bc2469999a1bfb

SHA512
3ea5f2c9999e35dd441e4981dfbfa6d71a85122504c141a6bda18514e9af799e84b2f06114ab8df77e77916f45614793783eeb945727e461bbd73d0e23cadfdc

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
25KB

MD5
e6d6bc6bdf6af1f7d872e4ab8aeb78ff

SHA1
8d19808200a2682b256f209ce305ec09f8c5ec3c

SHA256
b8d7ec885ecf98c8a552d5c9d673d75a05bcd3caaeca5414663082b4228beafd

SHA512
581e988c63ba5b2f57644564a5d7a027d1c3250d0394460262e61e68ac0c0fdac77250ac95dc48fcf8ff42fdc4f5e2654e13984c4efa7b320f2fef63a15c7183

Download Submit
memory/2404-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2404-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2404-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2404-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2404-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3648-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3648-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download