ea79111406ba792a66df20193615cf5af2181b2fefb8c779554ae78f1f9d847c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 04:24

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General

Target

2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe
Size

60KB
MD5

0aef9ae123a14b4ffea9613e6a5f3c0e
SHA1

5429d076a278e1bb6ea832e2017911e20a09f830
SHA256

ea79111406ba792a66df20193615cf5af2181b2fefb8c779554ae78f1f9d847c
SHA512

aa4501cf3fd097588bb41906106e73555dbf9055b8a01cd03c3a4df12a99432f8e15bb5aed563f49b290cc4df2f343a032c5251ec248f5f538d380133edb3090
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMOJ:TCjsIOtEvwDpj5HE/OUHnSMF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4568-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023161-13.dat	CryptoLocker_rule2
behavioral2/memory/4568-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4076-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4076-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4568-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b000000023161-13.dat	CryptoLocker_set1
behavioral2/memory/4568-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4076-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4076-27-0x0000000000500000-0x000000000050E000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4076	misid.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 4568 wrote to memory of 4076	4568	2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe	84
PID 4568 wrote to memory of 4076	4568	2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe	84
PID 4568 wrote to memory of 4076	4568	2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0aef9ae123a14b4ffea9613e6a5f3c0e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4076

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\misid.exe

Filesize
60KB

MD5
c12c57fd67d6f8f4f40021de94cbe5ba

SHA1
85e2a83b8d1aea6d22ab2f8efa22d79cdb30ec0b

SHA256
64b137588b363756d390b00d7b77af9bc52fb1b79ac003a7af0a86a94fbde049

SHA512
f22d56980e2a6f48c37a44f4846eaae27d74839cf813277a333234a9bb3c7bd03289ba704c61ce9124b184366a8aa9e30832bac3cd4f207efc7a32b5a7fd628a

Download Submit
memory/4076-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4076-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4076-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4076-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4568-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4568-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4568-3-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4568-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download