djvu | 93dfdf05a0729f9ef8f7088a4f5d273f9ca4895ae46c842b2a702e856a60007c

Analysis

max time kernel
145s
max time network
134s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 18:25

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General

Target

ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Size

762KB
MD5

a0dbbf3c7bbec9c0533adf99bfba6a5e
SHA1

148210866871762aca2936f7d79d2729bc821bb4
SHA256

ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e
SHA512

ef7f559fd32f4383429f42cd11e4c03bdb7735dd0f216075b0a096f9c40349d51d2a05bba39361d03f774a65956678996623569e29d184d8c68ade4c5f278bec
SSDEEP

12288:FLx3jQiMDN17Mxvx7w8dCIl9DG8/8+OGn42pp/srMAjGC7sLbX+zB9L:dOiGVPIHGCweJ7srhRYw

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/2600-2-0x00000000006E0000-0x00000000007FB000-memory.dmp	family_djvu
behavioral1/memory/1652-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1652-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1652-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1652-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2648-68-0x0000000000400000-0x0000000000537000-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
2948	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0e79b5a9-d4de-4d73-9b55-7e2ce7fa68d5\\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe\" --AutoStart"	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.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
9	api.2ip.ua
4	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2624 set thread context of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.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	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
2648	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
2648	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 2600 wrote to memory of 1652	2600	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	30
PID 1652 wrote to memory of 2948	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	32
PID 1652 wrote to memory of 2948	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	32
PID 1652 wrote to memory of 2948	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	32
PID 1652 wrote to memory of 2948	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	32
PID 1652 wrote to memory of 2624	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	33
PID 1652 wrote to memory of 2624	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	33
PID 1652 wrote to memory of 2624	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	33
PID 1652 wrote to memory of 2624	1652	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	33
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34
PID 2624 wrote to memory of 2648	2624	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	34

C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
"C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
  "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0e79b5a9-d4de-4d73-9b55-7e2ce7fa68d5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2948
- - C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
    "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
      "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2648

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
57e5b1c1f25b0c45677eca5f52fb4c5e

SHA1
c35293e5bf47abdc22bc515585b5eb65f0dc65bc

SHA256
50c16ca14c1a48211325cd5dd69cbaee811322349351963bc2d9581e98be4d74

SHA512
7c1b04454a1d18c72a92966dad3a75d611e3a687a5e03c9549deec54b76d3343567ddf28a6853ca08ec4cb5edff9a746aa050e1ec8e73e557e90f7c71274c476

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

Filesize
170B

MD5
fc3df61603ba3e932eae1f8c4372c4a3

SHA1
2c68e18e0ca642732f98239d95eac814c2d8ed2b

SHA256
3ae97fad7058b78fd54328cf08beefb491c6f17750afcf3fd22533dd8eecb022

SHA512
ba1c8c93c6399bd3452c1e41a4e19cfdfe64d28595c1393c3a37c139dea80f2d811347728f807f64597b6141b5c357b685887e1f535996ca97881d8eb0aad119

Download Submit
C:\Users\Admin\AppData\Local\0e79b5a9-d4de-4d73-9b55-7e2ce7fa68d5\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Filesize
762KB

MD5
a0dbbf3c7bbec9c0533adf99bfba6a5e

SHA1
148210866871762aca2936f7d79d2729bc821bb4

SHA256
ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e

SHA512
ef7f559fd32f4383429f42cd11e4c03bdb7735dd0f216075b0a096f9c40349d51d2a05bba39361d03f774a65956678996623569e29d184d8c68ade4c5f278bec

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabC14C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1652-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1652-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-7-0x0000000000320000-0x00000000003B2000-memory.dmp

Filesize
584KB

Download
memory/2600-0-0x0000000000320000-0x00000000003B2000-memory.dmp

Filesize
584KB

Download
memory/2600-2-0x00000000006E0000-0x00000000007FB000-memory.dmp

Filesize
1.1MB

Download
memory/2600-1-0x0000000000320000-0x00000000003B2000-memory.dmp

Filesize
584KB

Download
memory/2624-28-0x0000000000530000-0x00000000005C2000-memory.dmp

Filesize
584KB

Download
memory/2624-29-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/2624-34-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/2648-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download