djvu | 0474887c2361109c3e0d8d0a8ee4967d96c5e48f3e159d68afe5dd83b3ef44a0

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 22:54

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General

Target

8abe2ec905753769c490fb953db3ade1.exe
Size

857KB
MD5

8abe2ec905753769c490fb953db3ade1
SHA1

a65adb238e866641c05f0cea7ed6a9c2e5167c75
SHA256

0474887c2361109c3e0d8d0a8ee4967d96c5e48f3e159d68afe5dd83b3ef44a0
SHA512

36c5279a2047985ee61d187e98d7bdda580745b8dd0d6f3735eccde913ae69d543b3b960b6406a4244ea1b25ea8eaee0aeef58e3a7557f8473691ccd9b93ab86
SSDEEP

12288:WJXz/4fXakh2xmWIFeRBZrnTnNab+avSKhLqSEVz5hvqNA2Ww5ckzPNDd44GArqt:A/YXBQnZrTUbLSyqSsLvH25dmxArqs

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.aeur
offline_id
PLHYenhTzernvINe5FDZE1JEquSPr2tHDdFTTit1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-rbzFCkr9sY 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: 0320gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2336-2-0x0000000004CD0000-0x0000000004DEB000-memory.dmp	family_djvu
behavioral1/memory/2384-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2384-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2384-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2384-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2692-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2000	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-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c5f6ad99-53d6-4b1a-9c14-5a43898b7c05\\8abe2ec905753769c490fb953db3ade1.exe\" --AutoStart"	8abe2ec905753769c490fb953db3ade1.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
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2832 set thread context of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2384	8abe2ec905753769c490fb953db3ade1.exe
2384	8abe2ec905753769c490fb953db3ade1.exe
2692	8abe2ec905753769c490fb953db3ade1.exe
2692	8abe2ec905753769c490fb953db3ade1.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2336 wrote to memory of 2384	2336	8abe2ec905753769c490fb953db3ade1.exe	28
PID 2384 wrote to memory of 2000	2384	8abe2ec905753769c490fb953db3ade1.exe	29
PID 2384 wrote to memory of 2000	2384	8abe2ec905753769c490fb953db3ade1.exe	29
PID 2384 wrote to memory of 2000	2384	8abe2ec905753769c490fb953db3ade1.exe	29
PID 2384 wrote to memory of 2000	2384	8abe2ec905753769c490fb953db3ade1.exe	29
PID 2384 wrote to memory of 2832	2384	8abe2ec905753769c490fb953db3ade1.exe	31
PID 2384 wrote to memory of 2832	2384	8abe2ec905753769c490fb953db3ade1.exe	31
PID 2384 wrote to memory of 2832	2384	8abe2ec905753769c490fb953db3ade1.exe	31
PID 2384 wrote to memory of 2832	2384	8abe2ec905753769c490fb953db3ade1.exe	31
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32
PID 2832 wrote to memory of 2692	2832	8abe2ec905753769c490fb953db3ade1.exe	32

C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
"C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
  "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c5f6ad99-53d6-4b1a-9c14-5a43898b7c05" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2000
- - C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
    "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
      "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2692

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
230436fc402a027155e3213d5785c3ba

SHA1
47d5cb9b2669c0c048a3bccf207fff76ac170a67

SHA256
7bf515f114d9386f1071e63a484d2e65051cc6432343fcfb7232effddc795070

SHA512
4d1cb6d2b02b26936626a6f42724c50543626000a09644bef7670c4648fca7d9aa5a27ce585ccaf566a1bfc386fc311e438b1a8c747fd62311c6ed645c10c4f6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
bd0c260b68445ac21ac2c3b28569555d

SHA1
8a63da5547b42a0d728de9619cf0866f6a8aba07

SHA256
9ba9ac8c6232c205532e97184bb4e658e4201b0c3f33b409bebf11e10d594f2d

SHA512
b972dea9b3c16745a8a5dd4ee8f2ae885f3f3edcc9a3f0348047a1a8bb5856370e185effc6a14b2312fc0d51429ec1806f7e4960440ce82b18aa4cc0ad60d1e6

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

Filesize
344B

MD5
0995caa52c5e0c1125e93b37e3d6637d

SHA1
da9f2b0b24c7d59bcad941d494bc4d431bbf0f81

SHA256
38b29c41f85db0eaaeb959287cd9259b1f84f7e52ad82f1cb82cc017a60ce9a5

SHA512
a304a1c9a6f22d46bc2ffaded775aef12cc03d9d08e635db90e1d288836f584f13b9d502c44496f6ce8660086fd0088ee8f5d862331825859a57077fd58639a9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
1bb7590bb4a36dedfba30a7873961a43

SHA1
ca44bae4edbfdff5464f7fb14a37f834414f26f3

SHA256
384bef279cf04dd17f52203e1896358c2f45adbbde13f853608371e954b8c15b

SHA512
c717c987490f6d052003cabf1e98ce4644b87275cc4c668eac5961b6e833d481a0f3c3ad8a8c1f998bc3c6d21f3de8d224762ca6f4c0643d063acc7470fd17b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4F39.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\c5f6ad99-53d6-4b1a-9c14-5a43898b7c05\8abe2ec905753769c490fb953db3ade1.exe

Filesize
857KB

MD5
8abe2ec905753769c490fb953db3ade1

SHA1
a65adb238e866641c05f0cea7ed6a9c2e5167c75

SHA256
0474887c2361109c3e0d8d0a8ee4967d96c5e48f3e159d68afe5dd83b3ef44a0

SHA512
36c5279a2047985ee61d187e98d7bdda580745b8dd0d6f3735eccde913ae69d543b3b960b6406a4244ea1b25ea8eaee0aeef58e3a7557f8473691ccd9b93ab86

Download Submit
memory/2336-7-0x00000000032E0000-0x0000000003372000-memory.dmp

Filesize
584KB

Download
memory/2336-2-0x0000000004CD0000-0x0000000004DEB000-memory.dmp

Filesize
1.1MB

Download
memory/2336-0-0x00000000032E0000-0x0000000003372000-memory.dmp

Filesize
584KB

Download
memory/2336-1-0x00000000032E0000-0x0000000003372000-memory.dmp

Filesize
584KB

Download
memory/2384-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2692-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-37-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download
memory/2832-32-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download
memory/2832-31-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download