b7c4f5d91474b8d4eee14f6401c1befe6048f2da6065aa67d934f366c8f6dd0e

General

Target

2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
Size

46KB
MD5

76940a588ed7f57cbce148ff99350eda
SHA1

7d2847d7a5193cfc7a8229aeaa1d159797a9ccbc
SHA256

b7c4f5d91474b8d4eee14f6401c1befe6048f2da6065aa67d934f366c8f6dd0e
SHA512

f8cb6fc991209dfce87ee8af69664d1cec25c8153a20d4032fc335778bd8515f7f88f6d82e1c921674dcb80e7decca03d574709a35d35b6f3bc762ac831f8095
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqOZ1:bODOw9acifH+Yo

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	lossy.exe

Executes dropped EXE 1 IoCs

pid	Process
3528	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/216-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x000c000000023b2d-13.dat	upx
behavioral2/memory/216-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3528-52-0x0000000008000000-0x000000000800F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Modifies system certificate store 2 TTPs 4 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\40CEF3046C916ED7AE557F60E76842828B51DE53	lossy.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\40CEF3046C916ED7AE557F60E76842828B51DE53\Blob = 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	lossy.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\D89E3BD43D5D909B47A18977AA9D5CE36CEE184C	lossy.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\D89E3BD43D5D909B47A18977AA9D5CE36CEE184C\Blob = 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	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 216 wrote to memory of 3528	216	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	83
PID 216 wrote to memory of 3528	216	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	83
PID 216 wrote to memory of 3528	216	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:216
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies system certificate store
  PID:3528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
46KB

MD5
fc1e37413cff91913fcda6c7ff37d162

SHA1
c57c71b7050ccc011982b4cdc6910751a875e2bd

SHA256
0ddc3fc757707d6a8e9c27d6cef4a4466ed607fc3a84ff10ddf21e29ca818c7a

SHA512
a1169871e43c2ae291d0bf6f1f01357db324af69b05bbddf458b1862255927478e3c943bbeb96c56abc503361858bb0aec4b7c297bd1b832792d8f78b3af992e

Download Submit
C:\Users\Admin\AppData\Local\Temp\swenled.exe

Filesize
537B

MD5
590a2a16db7c9454e5429278e1e95347

SHA1
11dd68b8c510df635ff033c58fa002fdcd196927

SHA256
c5ffd9dbef8cebbf04436e0680847b95be3f8140e3b3d1e99fe7e743799dfd97

SHA512
7e55708920fe2541ab1236c7616d67fd85795e80bc5f399d9b101372c347534940f2f81d942bb094c2d188b23a3501439443afbc0ca142758708c909c009cfa3

Download Submit
memory/216-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/216-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/216-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/216-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/216-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3528-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3528-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3528-52-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download

Analysis

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