djvu | ff5c6b330fd452c622cd028cfdbdf59f86c56cbbfeb706f4d618e5011cc6800e

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 19:57

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General

Target

72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
Size

761KB
MD5

da184a04f7503d1987463e08a06c5adb
SHA1

cea34f659783ff34be193ec20910607484730e33
SHA256

72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece
SHA512

8a96f9b412e39ca148a07b9991f24d9302470bb37e7072e9dca0149eaff41afab3ac5817cda73759d613f0a48f8d42be5b48877a7cb0ff7a3fa0fae1b5d2556b
SSDEEP

12288:mMWT7I+n5prgwHc+URE/WRXxf6+wAosKGmY+DQmcMelXmJYW9lUBxwStzn3nDufC:7r+LsQQN2BrcPIew+0SlnTujFiEBaWU

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.ghas
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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2548-2-0x00000000004F0000-0x000000000060B000-memory.dmp	family_djvu
behavioral1/memory/2060-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2060-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2060-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2060-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2876	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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d5807ef2-94d7-4e4d-a7f9-6bf89f715d62\\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe\" --AutoStart"	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 3004 set thread context of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34

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	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
2480	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
2480	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2548 wrote to memory of 2060	2548	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	30
PID 2060 wrote to memory of 2876	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	32
PID 2060 wrote to memory of 2876	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	32
PID 2060 wrote to memory of 2876	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	32
PID 2060 wrote to memory of 2876	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	32
PID 2060 wrote to memory of 3004	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	33
PID 2060 wrote to memory of 3004	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	33
PID 2060 wrote to memory of 3004	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	33
PID 2060 wrote to memory of 3004	2060	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	33
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34
PID 3004 wrote to memory of 2480	3004	72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe	34

C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
"C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
  "C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d5807ef2-94d7-4e4d-a7f9-6bf89f715d62" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2876
- - C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
    "C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3004
  - - C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe
      "C:\Users\Admin\AppData\Local\Temp\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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
ac46920b80f4132f43c55783c752f4cd

SHA1
9e915c84de472b063b781077ad990f5aae50dd89

SHA256
27fa37c0e1a44e3159f2c8668bcb25c5cfbcd870af5bf08cb21b39a9ac534bd0

SHA512
855a5862d114a43d97587b26b9bf93e66760da3423a880d8e78031ba3be550d98a5157e189040f13a74f70037345e564b1d2872efc29916fe8635e3b85ea8477

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

Filesize
170B

MD5
7c2f8f62ab87edeb9d53e87196f98565

SHA1
54f2a9db9ddb201221aa44ed1837cfe2598e28ef

SHA256
c8cb03e5556b89bea14d1a99a45aa37a6935ae37d76c34e78fa121ca7a53e48a

SHA512
a00cc318ba28d658ea4bb50109b0d672cffc37a90558a23a9c7b8442a29870bc8a41116367738cfa719ccb2eb10290337d502422ae8710b6e1f2b53c881358a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabC38D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\d5807ef2-94d7-4e4d-a7f9-6bf89f715d62\72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece.exe

Filesize
761KB

MD5
da184a04f7503d1987463e08a06c5adb

SHA1
cea34f659783ff34be193ec20910607484730e33

SHA256
72922c3259f8c0f4241724de394665dad64c5ded24d22684ff6e09b39e510ece

SHA512
8a96f9b412e39ca148a07b9991f24d9302470bb37e7072e9dca0149eaff41afab3ac5817cda73759d613f0a48f8d42be5b48877a7cb0ff7a3fa0fae1b5d2556b

Download Submit
memory/2060-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2060-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2060-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2060-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2060-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2548-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2548-2-0x00000000004F0000-0x000000000060B000-memory.dmp

Filesize
1.1MB

Download
memory/2548-6-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2548-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/3004-32-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/3004-27-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download
memory/3004-28-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download