e3d3401c966a91460b5b27fef83d99b2afbafe6343b6574d421e92f0211544a1

Analysis

max time kernel
143s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 06:44

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General

Target

2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe
Size

95KB
MD5

c016dbc7fa064ef887f0554372373067
SHA1

a35ed16119c04badb82e5825ac2aec764b67320d
SHA256

e3d3401c966a91460b5b27fef83d99b2afbafe6343b6574d421e92f0211544a1
SHA512

4ad0c8513bd56dfc5b956d7d0bcfa393289ef8b11d4b7bce56d963c63a530d4e7938e7b38cf72267d498c599c9c85042dd71a150ebd9f9704f0858c8f29f9941
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp012:AnBdOOtEvwDpj6zo

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/4548-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/556-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/4548-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/556-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0006000000023207-13.dat	UPX
behavioral2/memory/4548-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/556-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
556	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4548-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0006000000023207-13.dat	upx
behavioral2/memory/4548-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/556-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 4548 wrote to memory of 556	4548	2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe	84
PID 4548 wrote to memory of 556	4548	2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe	84
PID 4548 wrote to memory of 556	4548	2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_c016dbc7fa064ef887f0554372373067_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:556

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
96KB

MD5
108d17ff2a482bd698612e71c4e32b31

SHA1
ef23c829b1151eed3d7b142de31e74bbce5e8895

SHA256
9284f6aa1ddf7860049973438ef2617db1a5e9c9b88dd006527e4c22d27e2e39

SHA512
f2957b709a076141bb1aa174ce9e49c957570309df46fb1e823ca769edb5b2059730d11f447d38a17765a63839fb53b2b3e8484a37e2c66c311d0fb87d02c484

Download Submit
memory/556-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/556-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/556-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4548-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4548-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4548-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4548-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4548-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download