djvu | 52f1349d9dc91034ca08152506f153903d926949c04e75e7d88df756e167a5f1

Analysis

max time kernel
145s
max time network
133s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 12:39

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General

Target

sample.exe
Size

785KB
MD5

dd0fbd97cd0e421a66ede4b9feba07c7
SHA1

2f60bf4743c8a87b53bbc8cd5eed505fdf57cf5d
SHA256

febcdb5b76ce20f3f85fd9521913e38b0364a40a873db4b2ad5116d6b92d442d
SHA512

8713d9f8f0e9615d836d9862d820393e94df42a4edc807d3c520f01f67efe0b72eb1073e882d7980b68dc9dc77384220c56e0e7edb8527f53842683aa552199c
SSDEEP

12288:fE7HrnlzeBv2UFZl9bT0RDqqslGWikuqUUq/51dqh5DV2I4rBL6M/Z:Anl0rFZPYGqsl1WqUDgjD4v

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.qpss
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: 0448JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2064-2-0x0000000001E90000-0x0000000001FAB000-memory.dmp	family_djvu
behavioral1/memory/1532-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1532-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1532-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1532-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-71-0x0000000000400000-0x0000000000537000-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
2908	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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\32e61786-6591-464a-ade8-a084b67dc83c\\sample.exe\" --AutoStart"	sample.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
5	api.2ip.ua
9	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2064 set thread context of 1532	2064	sample.exe	30
PID 3048 set thread context of 2916	3048	sample.exe	35

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1532	sample.exe
1532	sample.exe
2916	sample.exe
2916	sample.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 2064 wrote to memory of 1532	2064	sample.exe	30
PID 1532 wrote to memory of 2908	1532	sample.exe	32
PID 1532 wrote to memory of 2908	1532	sample.exe	32
PID 1532 wrote to memory of 2908	1532	sample.exe	32
PID 1532 wrote to memory of 2908	1532	sample.exe	32
PID 1532 wrote to memory of 3048	1532	sample.exe	33
PID 1532 wrote to memory of 3048	1532	sample.exe	33
PID 1532 wrote to memory of 3048	1532	sample.exe	33
PID 1532 wrote to memory of 3048	1532	sample.exe	33
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35
PID 3048 wrote to memory of 2916	3048	sample.exe	35

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Users\Admin\AppData\Local\Temp\sample.exe
  "C:\Users\Admin\AppData\Local\Temp\sample.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\32e61786-6591-464a-ade8-a084b67dc83c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2908
- - C:\Users\Admin\AppData\Local\Temp\sample.exe
    "C:\Users\Admin\AppData\Local\Temp\sample.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3048
  - - C:\Users\Admin\AppData\Local\Temp\sample.exe
      "C:\Users\Admin\AppData\Local\Temp\sample.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2916

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
485bf24b9a21ef779aa85d4b0f390b85

SHA1
f925f3158f9de9e3fc4a2e8b586bd9576e2abeb5

SHA256
87dad28281e45391784f0368b7bd3c63fd9819e539213ee3ec566ff3d5cc37f0

SHA512
d7ab774fe82369c9f0c0dbac57baed6cd3f1a32ed69d7b0ca0d493079a31616677088761a8bc7eee5acad54f4a5c2a83a1fe09250a7186851479c40fbef52662

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

Filesize
170B

MD5
c4dc592b2685400a4de0470e40da454f

SHA1
0e02ef321419758717063c3b3943054202cbca54

SHA256
90e741c11c70742cb4ef87ab102f37a46765e727004218b135b21426af12d9f6

SHA512
dfc5634f88de874f21cedb182dee037b55962136f8b0ee80e81ed61689f8b29e6757b43dcc1f4921b71e16af8fd7905363f93bf950dbcef97fdff091cdfee229

Download Submit
C:\Users\Admin\AppData\Local\32e61786-6591-464a-ade8-a084b67dc83c\sample.exe

Filesize
785KB

MD5
dd0fbd97cd0e421a66ede4b9feba07c7

SHA1
2f60bf4743c8a87b53bbc8cd5eed505fdf57cf5d

SHA256
febcdb5b76ce20f3f85fd9521913e38b0364a40a873db4b2ad5116d6b92d442d

SHA512
8713d9f8f0e9615d836d9862d820393e94df42a4edc807d3c520f01f67efe0b72eb1073e882d7980b68dc9dc77384220c56e0e7edb8527f53842683aa552199c

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabCC44.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1532-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1532-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1532-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1532-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1532-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2064-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2064-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2064-2-0x0000000001E90000-0x0000000001FAB000-memory.dmp

Filesize
1.1MB

Download
memory/2064-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2916-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-71-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3048-37-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/3048-31-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/3048-30-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download