djvu | 9d45043266ad627224c951cb91f37261bc7bd393aa8ce87a39e8b42f3a543dbf

General

Target

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
Size

773KB
MD5

615fc4386c424b7cfd695ea56244b90c
SHA1

a4e961c34abcfc25c348a29ac647a1f6b357f7d5
SHA256

9d45043266ad627224c951cb91f37261bc7bd393aa8ce87a39e8b42f3a543dbf
SHA512

0e51a60826a6ab416f2a19b437ff543f0b6818bc6a501907fa6eb2c70d4c8035ad9fa549c26f53dee426af663f8945a065a2d332d7c047d92b9c2aa78814d2fe
SSDEEP

12288:Gs9OFhQ8y+cdylI0Ec5i1uAA9MQ7gwn+D79xS5nR+T9gghW7GGWAu9E329C5zT:Gs9Ojg6lREzeMrwn3nWGghWpa9G

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 14 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1668-2-0x0000000004550000-0x000000000466B000-memory.dmp	family_djvu
behavioral1/memory/396-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/396-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/396-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/396-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2756 icacls.exe

pid	process
2756	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6cba0496-a20c-4866-9a03-761233ac95c3\\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe\" --AutoStart"	615fc4386c424b7cfd695ea56244b90c_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.

Processes:

flow ioc

4 api.2ip.ua
5 api.2ip.ua
9 api.2ip.ua

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

description	pid	process	target process
PID 1668 set thread context of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 set thread context of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

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

Processes:

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exeicacls.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

pid	process
396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
2728	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
2728	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6cba0496-a20c-4866-9a03-761233ac95c3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2756
- - C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2180
  - - C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2728

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
0a38036e4b2f2ff439fb4ca9f34567cb

SHA1
938fc1db4d12cda2d2be7b1b460ce4c40e5d556a

SHA256
61065063a12099389076a7c20b2b297a3b58a2aab4bf8ed47011363ba702da85

SHA512
64ca3c5a4861dc3d11b3b6b79e2795fc7935af6c12946f3b5cf99e4b3b90c413ab326c0c69fc3791b615ff4062ae55d702f96feb9d55cf39c1db5f2100719e96

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

Filesize
170B

MD5
b3bdbfbacd5b1be5c23b0ff578f8a23f

SHA1
d8d9cd5e0bb46382025b7e01f1d95e99fb85b66a

SHA256
64a18b0a76bbd57ad9284f05bba3922bb055644e94ebcb4584adb32aad84a6d2

SHA512
e1985af914a85ac45c49c5947884a89be78442910f0996dad76b0a9de465705be3c8d4e3cff08be1e759421ea752ccc407420a51ac624215278bbedb498b1760

Download Submit
C:\Users\Admin\AppData\Local\6cba0496-a20c-4866-9a03-761233ac95c3\615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

Filesize
773KB

MD5
615fc4386c424b7cfd695ea56244b90c

SHA1
a4e961c34abcfc25c348a29ac647a1f6b357f7d5

SHA256
9d45043266ad627224c951cb91f37261bc7bd393aa8ce87a39e8b42f3a543dbf

SHA512
0e51a60826a6ab416f2a19b437ff543f0b6818bc6a501907fa6eb2c70d4c8035ad9fa549c26f53dee426af663f8945a065a2d332d7c047d92b9c2aa78814d2fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF27A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/396-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/396-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/396-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/396-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/396-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1668-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/1668-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/1668-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/1668-2-0x0000000004550000-0x000000000466B000-memory.dmp

Filesize
1.1MB

Download
memory/2180-29-0x00000000002F0000-0x0000000000382000-memory.dmp

Filesize
584KB

Download
memory/2728-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 1668 wrote to memory of 396	1668	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 396 wrote to memory of 2756	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	icacls.exe
PID 396 wrote to memory of 2756	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	icacls.exe
PID 396 wrote to memory of 2756	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	icacls.exe
PID 396 wrote to memory of 2756	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	icacls.exe
PID 396 wrote to memory of 2180	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 396 wrote to memory of 2180	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 396 wrote to memory of 2180	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 396 wrote to memory of 2180	396	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe
PID 2180 wrote to memory of 2728	2180	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe	615fc4386c424b7cfd695ea56244b90c_JaffaCakes118.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads