djvu | 4692ef62991ef98b0b34256130cdf46202bdbd559dce6358b91db055f8d81682

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 11:17

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General

Target

a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
Size

814KB
MD5

7957a57c6a09cb2feafd220bf7b5837d
SHA1

f3af4907604329c3779725cc81731c3e5f8d7f96
SHA256

a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda
SHA512

a70e74ab3d63b5b6838eeee59847b125e34ab4f98cb9ba36f44be47c35db51a745c60efca300fe12bf16ff61d7e1ccaa0453291d008bb0ba9576b349169ba45d
SSDEEP

24576:EHi7xO7FSmvgF8MVWwYwLubiX8R7INJBnU:J60m+WwhDs7aU

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vvew
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.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-QsoSRIeAK6 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: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/3048-2-0x00000000004E0000-0x00000000005FB000-memory.dmp	family_djvu
behavioral1/memory/2052-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2052-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2052-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2724-66-0x0000000000400000-0x0000000000537000-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
2732	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\\0c773c73-cf0d-42f5-96f8-2ff69159e024\\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe\" --AutoStart"	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.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 3048 set thread context of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 2740 set thread context of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.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	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
2724	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
2724	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 3048 wrote to memory of 2052	3048	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	30
PID 2052 wrote to memory of 2732	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	32
PID 2052 wrote to memory of 2732	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	32
PID 2052 wrote to memory of 2732	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	32
PID 2052 wrote to memory of 2732	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	32
PID 2052 wrote to memory of 2740	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	33
PID 2052 wrote to memory of 2740	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	33
PID 2052 wrote to memory of 2740	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	33
PID 2052 wrote to memory of 2740	2052	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	33
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34
PID 2740 wrote to memory of 2724	2740	a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe	34

C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
"C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
  "C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0c773c73-cf0d-42f5-96f8-2ff69159e024" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2732
- - C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
    "C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe
      "C:\Users\Admin\AppData\Local\Temp\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2724

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
95f86f39ef372fc310209242621bc9ae

SHA1
a44a1c8a40a6be2eb61c458bed73873ef3ef5f45

SHA256
20cc61189daf8686ce6ea025207b9208acde9a3dfb4338a9e8dbceb0c6796554

SHA512
d811457c8ff72209ff0908ad7c20538f941ba9901c78a6992078afc087bf93e7ff0a5a8b39aa61cc109c0c71c8d37d298318b473e32c4f0a471e3feee02b915d

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

Filesize
170B

MD5
c04654e1bd4fabd033a257a49fef932d

SHA1
1b2f40513a989ce8981f3df70812ff4df76a7481

SHA256
1de8630d5cc80dc8831d43dbdbeee253d7b838ce3bc0dfe1e120293f77b6da26

SHA512
92f08bfeca75df6fb7c2c10b4a89f8c642253aef8c6d3b8af6fb7d7207eff12f236cdfe43672768537dbe8fc128a56e5efbfc5c82d8e11c6a45a79dd7c03c4b2

Download Submit
C:\Users\Admin\AppData\Local\0c773c73-cf0d-42f5-96f8-2ff69159e024\a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda.exe

Filesize
814KB

MD5
7957a57c6a09cb2feafd220bf7b5837d

SHA1
f3af4907604329c3779725cc81731c3e5f8d7f96

SHA256
a33c16fe3207c333632d2698d07e9a92d55be5305a6a8047df339dd255cb4eda

SHA512
a70e74ab3d63b5b6838eeee59847b125e34ab4f98cb9ba36f44be47c35db51a745c60efca300fe12bf16ff61d7e1ccaa0453291d008bb0ba9576b349169ba45d

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabAE87.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2052-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2052-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2724-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2740-32-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2740-27-0x0000000001C50000-0x0000000001CE1000-memory.dmp

Filesize
580KB

Download
memory/2740-28-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/3048-1-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/3048-2-0x00000000004E0000-0x00000000005FB000-memory.dmp

Filesize
1.1MB

Download
memory/3048-7-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/3048-0-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download