28de5650e01c9d13d2e346141daec022dd9ba4302b59318ffaf84b7437b5678c

Analysis

max time kernel
135s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 13:34

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General

Target

2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe
Size

94KB
MD5

c88cbe41bdb13d323f4de766e6960583
SHA1

0ce178f63fd50a9a9b6785774d5b1162cce6a67f
SHA256

28de5650e01c9d13d2e346141daec022dd9ba4302b59318ffaf84b7437b5678c
SHA512

c4dc2c49d5cfb6687df89ef0bffdf404d01cddfc09e07e66550bb1575859ef1960204f5c892b6d705cb25da42e5acc15500c35717276f39fc248e60e584c55cd
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/R:xj+VGMOtEvwDpjubwQEIiVmkxv/R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023123-13.dat	CryptoLocker_rule2
behavioral2/memory/4852-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4536-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023123-13.dat	CryptoLocker_set1
behavioral2/memory/4852-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4536-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023123-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4852-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4536-54-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	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 4852 wrote to memory of 4536	4852	2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe	83
PID 4852 wrote to memory of 4536	4852	2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe	83
PID 4852 wrote to memory of 4536	4852	2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4852
- 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:4536

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
94KB

MD5
125cc2d2323ca7958c79cd51938db94c

SHA1
223bee1ed18586900f91b5edc7e3279cdd50b636

SHA256
2ff1318da7555f9650b3b5c26b2c61adc17c3a4b81df398a01bd22fac2fd4345

SHA512
94f4e295a6ba5ed07c613729205213b6001e63291faefe9d09a61def0d2b99b32a58a1e4235ceca99a70fee683ac3d64496f0096c37aca4b5fd5660a5231327e

Download Submit
memory/4536-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4536-21-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4536-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4852-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4852-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4852-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4852-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download