djvu | de911ac34eaf245b021db66b7ccf13af0f1f83de17caa33829adcbd7eeb7fc45

Analysis

max time kernel
143s
max time network
130s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 14:22

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General

Target

7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
Size

784KB
MD5

459803ec0adf835b5e93883d886fb100
SHA1

962df93776acb813318c02293efc35d8aa5904c1
SHA256

7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2
SHA512

c40ed8612973451546511558be95d8055b6a0e5ccdaee5b971abc1cd64bc50b036b1fc80e0101a198e42cf0fded9e007b5e062faf5a1cffddde068c9deeb0aa5
SSDEEP

24576:GXuzmfOT3AvW7SokR7jKBiPNFsjdqGKp8/kI:A6wYSokR7GBiPNErKP

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/2652-2-0x0000000001D80000-0x0000000001E9B000-memory.dmp	family_djvu
behavioral1/memory/2780-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3024-70-0x0000000000400000-0x0000000000537000-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
1896	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f8078d9c-b288-428e-8e99-34dc167b5703\\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe\" --AutoStart"	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2528 set thread context of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.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	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
3024	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
3024	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2652 wrote to memory of 2780	2652	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	31
PID 2780 wrote to memory of 1896	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	32
PID 2780 wrote to memory of 1896	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	32
PID 2780 wrote to memory of 1896	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	32
PID 2780 wrote to memory of 1896	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	32
PID 2780 wrote to memory of 2528	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	33
PID 2780 wrote to memory of 2528	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	33
PID 2780 wrote to memory of 2528	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	33
PID 2780 wrote to memory of 2528	2780	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	33
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34
PID 2528 wrote to memory of 3024	2528	7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe	34

C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
"C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
  "C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f8078d9c-b288-428e-8e99-34dc167b5703" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1896
- - C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
    "C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2528
  - - C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe
      "C:\Users\Admin\AppData\Local\Temp\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3024

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
6ff3b84865aca5e58716a2a814801f87

SHA1
c1b2212781ff7c5db93912b032cc2133c6242c3d

SHA256
56bc983b9c823125c61caf34cb67b7752b64b716bf2fb9115e70ab1f5d13f113

SHA512
62bfb5aa7101f0397e4eadc0a2d43abec8e4e95b50305511b8b2431f99afe786aa5d964355530a63d741b5635cfde6847edfa239d0a4507f733ed193be74e3f5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
6939848e436bbe7e91b4bc131d6775e6

SHA1
3247350d697f270410cba22d9d1d25dee308bdc5

SHA256
450140ab75cd84e654ceeb85cdd26ad680f253c3904e0c0534f3114871aacf80

SHA512
7dd86a3597dadeceb63ea578c28898e75416f3bce7ab26537e055199147694aca6e89a93d3c61f9f7a42578d0ed4df054aeb05168bf6b1567a263a2a537c9417

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

Filesize
170B

MD5
088355db7c5b3717c4447c67326c6b52

SHA1
45db57b142a7d495d6e61ffaadf3eeb9cbcb5f28

SHA256
b83604a288ea8e024e7f1a1881b9ec596ab1047bf0509af694f54aa3b938b4bb

SHA512
4a5dcecde4599ab4ad388cbcb8558f9da05a5bf1c756d35f6b65c778e60ab183dee9d4d5a6fb10d2b6e7e5945280ad83a367e68ad9a711f0352abb9ef1abfa68

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

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\f8078d9c-b288-428e-8e99-34dc167b5703\7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2.exe

Filesize
784KB

MD5
459803ec0adf835b5e93883d886fb100

SHA1
962df93776acb813318c02293efc35d8aa5904c1

SHA256
7327a0f712215331725901c0383927b50edc3cf9fbcdca70700fb613c59990b2

SHA512
c40ed8612973451546511558be95d8055b6a0e5ccdaee5b971abc1cd64bc50b036b1fc80e0101a198e42cf0fded9e007b5e062faf5a1cffddde068c9deeb0aa5

Download Submit
memory/2528-30-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2528-31-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2528-36-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2652-7-0x00000000002A0000-0x0000000000332000-memory.dmp

Filesize
584KB

Download
memory/2652-0-0x00000000002A0000-0x0000000000332000-memory.dmp

Filesize
584KB

Download
memory/2652-2-0x0000000001D80000-0x0000000001E9B000-memory.dmp

Filesize
1.1MB

Download
memory/2652-1-0x00000000002A0000-0x0000000000332000-memory.dmp

Filesize
584KB

Download
memory/2780-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3024-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download