djvu | 3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f

General

Target

JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
Size

833KB
MD5

76986b9982ec8ce988467ea9b5c15734
SHA1

7ec7651244c50b5bc9445540347475104da96417
SHA256

3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f
SHA512

8142d5e0a7837733e1d71298588613b31f6c20a340365d6f34e77131e98882933ab29624c65b7c44b4279bf4fc3fd02598c1d185f97eeaddbf4ff5237a847c18
SSDEEP

12288:QXSm4PokKKNZ00nOf9sgI+LE0Qas8g28P89M1sNaOamKBJYunnwR:wSnKoZpkLLrP5M0YrJzwR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes

extension
.wdlo
offline_id
i0fXrUHVihm5xsI9Icg243YMPJqd748Ocimkyjt1
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-0S984cQ4B3 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: 0430JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/4656-2-0x0000000002300000-0x000000000241B000-memory.dmp	family_djvu
behavioral2/memory/3928-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3928-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3928-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3928-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3928-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/680-47-0x0000000000400000-0x0000000000537000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2156	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6469eb95-6b91-4a66-a652-7eb69dca11f6\\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe\" --AutoStart"	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.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
11	api.2ip.ua
12	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4656 set thread context of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 3812 set thread context of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88

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	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
680	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
680	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 4656 wrote to memory of 3928	4656	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	83
PID 3928 wrote to memory of 2156	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	84
PID 3928 wrote to memory of 2156	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	84
PID 3928 wrote to memory of 2156	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	84
PID 3928 wrote to memory of 3812	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	85
PID 3928 wrote to memory of 3812	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	85
PID 3928 wrote to memory of 3812	3928	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	85
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88
PID 3812 wrote to memory of 680	3812	JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.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:3928
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6469eb95-6b91-4a66-a652-7eb69dca11f6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2156
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3812
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:680

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
72db6eeae6a0ca3720524e9482751a60

SHA1
3709f6d6963bdf0ccfa7d373f3bc66ea1b7a01d3

SHA256
22517172c6d8207b56ea9ab5739b039a6f04768dc3446647aae3dbe43cfa6fc6

SHA512
406e1b1dd5af28067c1fbbc6cb06913e6cfc6c17942d090d01c30ea1a7b2887ac24b31e6852b9606822cb8d4d3fd98a448553d18a36876ac9d04c87c46e96b7b

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

Filesize
170B

MD5
f2d5a818a946dec91459a5bf64dcac42

SHA1
90989bc82f99af83abf84c1ea2929597f8947604

SHA256
977bb031c9d1639f03271aad4fa6803841811a4e45644d367c7a5a5486e99950

SHA512
010dc32d9409e0d7226fd76e486872501ba216fa7ab8f1ae81c16d5edeefdfaa27607962a641d8221963a5170bb3a3ad7d046e4ca9821acdfdf1bcf5c1352c66

Download Submit
C:\Users\Admin\AppData\Local\6469eb95-6b91-4a66-a652-7eb69dca11f6\JaffaCakes118_3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f.exe

Filesize
833KB

MD5
76986b9982ec8ce988467ea9b5c15734

SHA1
7ec7651244c50b5bc9445540347475104da96417

SHA256
3981a16eb4ef5e1c2d97d708420ac73f53b8569adef4e88c8df9ff9166613a5f

SHA512
8142d5e0a7837733e1d71298588613b31f6c20a340365d6f34e77131e98882933ab29624c65b7c44b4279bf4fc3fd02598c1d185f97eeaddbf4ff5237a847c18

Download Submit
memory/680-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/680-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3812-23-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/3812-19-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/3928-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3928-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3928-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3928-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3928-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4656-2-0x0000000002300000-0x000000000241B000-memory.dmp

Filesize
1.1MB

Download
memory/4656-1-0x0000000002260000-0x00000000022FF000-memory.dmp

Filesize
636KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads