5f072013b5f2f86f1c77e8c80e35e3e77acfba21e5216cea886bf8472c8dee17

Analysis

max time kernel
100s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 06:58

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General

Target

2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe
Size

127KB
MD5

ff210c4084b064dd8d10ee2bffb8788f
SHA1

4261c982248ce8dda6e2753c0f5d0ef8ef8048d6
SHA256

5f072013b5f2f86f1c77e8c80e35e3e77acfba21e5216cea886bf8472c8dee17
SHA512

866ffdf978585dc55545bde2e18fa0baa2c297063eec7feb9de45579a664983b1b5fcde1541c990106e84134fe158c3ea8076738530a3a2efeb2c8e87bee71e0
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBp2e:vCA9OtEvwDpjN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023203-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023203-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4660	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 4928 wrote to memory of 4660	4928	2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe	87
PID 4928 wrote to memory of 4660	4928	2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe	87
PID 4928 wrote to memory of 4660	4928	2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_ff210c4084b064dd8d10ee2bffb8788f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4660

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
127KB

MD5
c1d943dddec2d6435105ad9df92d62dc

SHA1
ee835eb7502324a25e7fb2443610e21bf4af051d

SHA256
256685277e863005d1579ea33e9920771657095f02322889d253a3ecae5e1dd2

SHA512
7a83af0218c78db3a9877e9efdf307e0e19b9b52689866576e12b891301ad0c0abb38f6fea06934b1c48eb6c56d4c3a52d8f42a8d2fdfa70ec663026fa31df6f

Download Submit
memory/4660-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4660-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4928-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4928-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4928-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download