djvu | 52f1349d9dc91034ca08152506f153903d926949c04e75e7d88df756e167a5f1

General

Target

sample.exe
Size

785KB
MD5

dd0fbd97cd0e421a66ede4b9feba07c7
SHA1

2f60bf4743c8a87b53bbc8cd5eed505fdf57cf5d
SHA256

febcdb5b76ce20f3f85fd9521913e38b0364a40a873db4b2ad5116d6b92d442d
SHA512

8713d9f8f0e9615d836d9862d820393e94df42a4edc807d3c520f01f67efe0b72eb1073e882d7980b68dc9dc77384220c56e0e7edb8527f53842683aa552199c
SSDEEP

12288:fE7HrnlzeBv2UFZl9bT0RDqqslGWikuqUUq/51dqh5DV2I4rBL6M/Z:Anl0rFZPYGqsl1WqUDgjD4v

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.qpss
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-0SLhZxAjRX Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0448JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/3964-2-0x0000000002230000-0x000000000234B000-memory.dmp	family_djvu
behavioral2/memory/4024-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4024-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4024-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4024-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4024-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2744-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	sample.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4140	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5f5f3281-e389-48c1-b220-1d070857f0bc\\sample.exe\" --AutoStart"	sample.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
21	api.2ip.ua
3	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3964 set thread context of 4024	3964	sample.exe	82
PID 5080 set thread context of 2744	5080	sample.exe	86

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 5 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	sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sample.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4024	sample.exe
4024	sample.exe
2744	sample.exe
2744	sample.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 3964 wrote to memory of 4024	3964	sample.exe	82
PID 4024 wrote to memory of 4140	4024	sample.exe	83
PID 4024 wrote to memory of 4140	4024	sample.exe	83
PID 4024 wrote to memory of 4140	4024	sample.exe	83
PID 4024 wrote to memory of 5080	4024	sample.exe	84
PID 4024 wrote to memory of 5080	4024	sample.exe	84
PID 4024 wrote to memory of 5080	4024	sample.exe	84
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86
PID 5080 wrote to memory of 2744	5080	sample.exe	86

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3964
- C:\Users\Admin\AppData\Local\Temp\sample.exe
  "C:\Users\Admin\AppData\Local\Temp\sample.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4024
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5f5f3281-e389-48c1-b220-1d070857f0bc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4140
- - C:\Users\Admin\AppData\Local\Temp\sample.exe
    "C:\Users\Admin\AppData\Local\Temp\sample.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5080
  - - C:\Users\Admin\AppData\Local\Temp\sample.exe
      "C:\Users\Admin\AppData\Local\Temp\sample.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

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

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
6320c888f011b0da9d683e856cf99de4

SHA1
1085eb241a755b4ba34f903abacf5a5502a1b5bb

SHA256
c79abed9b40542677b14cb451c650b90e4cb90bd1b9755f8555e76eb6bdda4ec

SHA512
c5f8d9760c032cb390f2be4d410c658b6efb521435e99348d35a14a82446f1e491af88b0696d71c552f30b45e471998b5d1eeacf5e522c6b659660611ef14bc6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
3ff07e5169e3071edb8eb6932a0316f4

SHA1
3e17b1cdf75157e78e8d014c134b2e2cf87959b5

SHA256
76b2bb939c73c19e55b8fb40050704e693a09883b0a72d3e17881e5c28d1918e

SHA512
691e7e05627807e8755a0079b1ac8dc9e1498e2eb104113bf6b59367bf1e57cb0297664c39a2abf153516b462460082d30c903722b43c935cc26aba9ff8e3f64

Download Submit
C:\Users\Admin\AppData\Local\5f5f3281-e389-48c1-b220-1d070857f0bc\sample.exe

Filesize
785KB

MD5
dd0fbd97cd0e421a66ede4b9feba07c7

SHA1
2f60bf4743c8a87b53bbc8cd5eed505fdf57cf5d

SHA256
febcdb5b76ce20f3f85fd9521913e38b0364a40a873db4b2ad5116d6b92d442d

SHA512
8713d9f8f0e9615d836d9862d820393e94df42a4edc807d3c520f01f67efe0b72eb1073e882d7980b68dc9dc77384220c56e0e7edb8527f53842683aa552199c

Download Submit
memory/2744-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3964-2-0x0000000002230000-0x000000000234B000-memory.dmp

Filesize
1.1MB

Download
memory/3964-1-0x00000000005C0000-0x000000000065A000-memory.dmp

Filesize
616KB

Download
memory/4024-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4024-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4024-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4024-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4024-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-23-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/5080-19-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads