djvu | 43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249

General

Target

eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Size

772KB
MD5

eb609796a7c36bae9dfed03f1369edd3
SHA1

4182d725695c5ced68f1a2644cbb34c48e2bb5e6
SHA256

43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249
SHA512

5b0b91b1ff65ddafeaed24e7ec84773d7900ad9e2e93266eb147881c1e4667cc5c13d02fb99a608a0a890b17f66ec96d72e17eef6509f0ea1c4cb30f0c83e1fd
SSDEEP

12288:Ks92pX7gHhrgad0iHS3BNvpWHDcvQUeR7vvg3v04eMP4yN9C5M:Ks92pX7gHhrB0iHSTuYoUCjVe9H

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.nooa
offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-CnI3tI6Ktv 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: 0322gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/4176-2-0x0000000004C20000-0x0000000004D3B000-memory.dmp	family_djvu
behavioral2/memory/728-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/728-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/728-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/728-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3568-41-0x0000000000400000-0x0000000000537000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2180	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c4339c42-1125-4b5c-b44b-2e82eca10fa4\\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe\" --AutoStart"	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.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
20	api.2ip.ua
11	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4176 set thread context of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4528 set thread context of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87

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	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
3568	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
3568	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 4176 wrote to memory of 728	4176	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	83
PID 728 wrote to memory of 2180	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	84
PID 728 wrote to memory of 2180	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	84
PID 728 wrote to memory of 2180	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	84
PID 728 wrote to memory of 4528	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	85
PID 728 wrote to memory of 4528	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	85
PID 728 wrote to memory of 4528	728	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	85
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87
PID 4528 wrote to memory of 3568	4528	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.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:728
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c4339c42-1125-4b5c-b44b-2e82eca10fa4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2180
- - C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4528
  - - C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3568

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
3e7bf21c5aa491fbf434b7dba5e5f239

SHA1
4bf2ce6a89d33f56aca2174cd57a08ed4d645102

SHA256
dec3086b7fe8ea0135b29729fb5c6a349bb043c5f786f2e15873d8f0052a95b8

SHA512
7e3e84c891cbf6aa609e459b6771883d41158e08bc06d869f4acd1d9b5d2f82008c384d5037011199f7276dfdb1d05d323235311e87c18094f6f551b127a2bdf

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

Filesize
170B

MD5
593390671c8c5e761bd8f878a1f2a605

SHA1
071665309a889bae60e170ce83f92636941debcf

SHA256
9c31f4deee720fba6c4517581ff794327ef0efdd428b4d5d93b30a0dc7fbae2c

SHA512
36bdb626738b3c48eaf9100966327b84f9869e25c6f8219786d3634ce800eaae273e656d276f830736447457eec3103e195b0690f6bbbe3a5c76831fffe173e2

Download Submit
C:\Users\Admin\AppData\Local\c4339c42-1125-4b5c-b44b-2e82eca10fa4\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Filesize
772KB

MD5
eb609796a7c36bae9dfed03f1369edd3

SHA1
4182d725695c5ced68f1a2644cbb34c48e2bb5e6

SHA256
43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249

SHA512
5b0b91b1ff65ddafeaed24e7ec84773d7900ad9e2e93266eb147881c1e4667cc5c13d02fb99a608a0a890b17f66ec96d72e17eef6509f0ea1c4cb30f0c83e1fd

Download Submit
memory/728-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3568-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4176-2-0x0000000004C20000-0x0000000004D3B000-memory.dmp

Filesize
1.1MB

Download
memory/4176-1-0x0000000004AF0000-0x0000000004B8B000-memory.dmp

Filesize
620KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads