406fc3b51d16cdee72eff7a43f7dfd7d2ff220803323484ba3ca74bc000d1b66

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29-04-2024 23:51

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General

Target

2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe
Size

54KB
MD5

c3edfc278fa0ee64c19e765f3820ceec
SHA1

8e98dfc1653f07bd41a4b2511a972472d592b4a1
SHA256

406fc3b51d16cdee72eff7a43f7dfd7d2ff220803323484ba3ca74bc000d1b66
SHA512

63d290da2a1812c324660831a801b80605c8dbff884788cd4aea8d27f2252205d67047fef829cbb9400a5387feed0d96cd2674cdf91e50a8a2570bbe05f2678b
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbqjasqS:bIDOw9a0DwitDZzcTmL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000022a9c-12.dat	CryptoLocker_rule2

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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1092	lossy.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 3780 wrote to memory of 1092	3780	2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe	84
PID 3780 wrote to memory of 1092	3780	2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe	84
PID 3780 wrote to memory of 1092	3780	2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_c3edfc278fa0ee64c19e765f3820ceec_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1092

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\lossy.exe

Filesize
54KB

MD5
63529e91d3cf76127354c0b5356761ee

SHA1
ee3dd120e84ae0769188b1976df1f6563e222717

SHA256
4ac251ef3c1f17a93919e1c69107b945d91f616ac6d7f845e89b05a20b77d4c3

SHA512
d786fd34c118db5adcbb4050bdfb48bde932d7d6704049f37fe712288acbd186e13cea29a942c6851241c205782b973f7718768836dbbcdee55884efd91be061

Download Submit
memory/1092-17-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1092-23-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3780-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3780-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3780-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download