6a5336f0dd5efb2a5692e0cf720b3b9d80da24b36ce135662d70017f248c3cab

Analysis

max time kernel
89s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 16:26

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General

Target

2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe
Size

78KB
MD5

3f3a84eca4ddc9190b32de8af97fbd49
SHA1

94bc4d7500f1ea1602edd872cc6c866ae4e70312
SHA256

6a5336f0dd5efb2a5692e0cf720b3b9d80da24b36ce135662d70017f248c3cab
SHA512

35f5289950fef3b75e7155ead871a444637e425b93b1ba87105799ab95d5b8138fa2159ee8701269ba47aec71da36d77ae38c861b308dc5f80cd734adffcd398
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMM:TCjsIOtEvwDpj5HE/OUHnSMO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1188-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000231eb-13.dat	CryptoLocker_rule2
behavioral2/memory/1188-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/624-52-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1188-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000231eb-13.dat	CryptoLocker_set1
behavioral2/memory/1188-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/624-52-0x0000000000500000-0x000000000050E000-memory.dmp	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
624	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 1188 wrote to memory of 624	1188	2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe	72
PID 1188 wrote to memory of 624	1188	2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe	72
PID 1188 wrote to memory of 624	1188	2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe	72

C:\Users\Admin\AppData\Local\Temp\2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_3f3a84eca4ddc9190b32de8af97fbd49_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1188
- 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:624

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
79KB

MD5
f7fbd00c0c2fa359f26fcd62307d7b5e

SHA1
cf7c9ea01fd4817fbe96f37ee0f32523fec683ba

SHA256
6620d00d48780d3c26ce6e731f1ce348af726f97fd5ea7a6e185f96496cd46fe

SHA512
e64c3203ef9fcf8b3d6fb3fb9505f77eb5a36428f557c7ac0977b9a7e1324f2028a25236f0220a2893a619f46ff33a95d8bdee376e84152e41745a6a7e1ba73f

Download Submit
memory/624-25-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/624-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/624-52-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1188-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1188-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1188-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1188-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/1188-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download