djvu | de8f146808af12f7a609b39c56cf46d9d204ef2e717ff5b83422b7d7deb34739

Analysis

max time kernel
146s
max time network
131s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 09:59

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General

Target

74660e011065ca6216f408d59cadf33e.exe
Size

723KB
MD5

74660e011065ca6216f408d59cadf33e
SHA1

0ad378f1f469f5c57a1516aa05139eee4bda5e8e
SHA256

de8f146808af12f7a609b39c56cf46d9d204ef2e717ff5b83422b7d7deb34739
SHA512

1cd8adc191f35d905cbd5e28806d578203501530e58d6fbc21bbb321cd23f2a77931ec055e80b17445a7c0470c77353d659f9e1c116d4fddeb45d7f06f81f218
SSDEEP

12288:Mr4xyEQyHNzX/d9kyUS9jyyMTvhHrxoMve/LWV3qgH7DJdmtfpec:Mr4x3HB1P0/ejS37bDJdm1p

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.orkf
offline_id
4aBXQVNZ4BhjpMjt78QLIFtBSJPbgbflYLHrBut1
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-ykQaS2tRyB 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: 0328gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/928-3-0x00000000045C0000-0x00000000046DB000-memory.dmp	family_djvu
behavioral1/memory/2612-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1944-80-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1944-90-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Executes dropped EXE 2 IoCs

pid	Process
1368	74660e011065ca6216f408d59cadf33e.exe
1944	74660e011065ca6216f408d59cadf33e.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2784	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-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a2bc9af1-4e73-4266-b579-c91af4f52362\\74660e011065ca6216f408d59cadf33e.exe\" --AutoStart"	74660e011065ca6216f408d59cadf33e.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.2ip.ua
9	api.2ip.ua
17	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 928 set thread context of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 1704 set thread context of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1368 set thread context of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2612	74660e011065ca6216f408d59cadf33e.exe
2616	74660e011065ca6216f408d59cadf33e.exe
2616	74660e011065ca6216f408d59cadf33e.exe
1944	74660e011065ca6216f408d59cadf33e.exe
1944	74660e011065ca6216f408d59cadf33e.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 928 wrote to memory of 2612	928	74660e011065ca6216f408d59cadf33e.exe	28
PID 2612 wrote to memory of 2784	2612	74660e011065ca6216f408d59cadf33e.exe	29
PID 2612 wrote to memory of 2784	2612	74660e011065ca6216f408d59cadf33e.exe	29
PID 2612 wrote to memory of 2784	2612	74660e011065ca6216f408d59cadf33e.exe	29
PID 2612 wrote to memory of 2784	2612	74660e011065ca6216f408d59cadf33e.exe	29
PID 2612 wrote to memory of 1704	2612	74660e011065ca6216f408d59cadf33e.exe	30
PID 2612 wrote to memory of 1704	2612	74660e011065ca6216f408d59cadf33e.exe	30
PID 2612 wrote to memory of 1704	2612	74660e011065ca6216f408d59cadf33e.exe	30
PID 2612 wrote to memory of 1704	2612	74660e011065ca6216f408d59cadf33e.exe	30
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1704 wrote to memory of 2616	1704	74660e011065ca6216f408d59cadf33e.exe	31
PID 1552 wrote to memory of 1368	1552	taskeng.exe	38
PID 1552 wrote to memory of 1368	1552	taskeng.exe	38
PID 1552 wrote to memory of 1368	1552	taskeng.exe	38
PID 1552 wrote to memory of 1368	1552	taskeng.exe	38
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39
PID 1368 wrote to memory of 1944	1368	74660e011065ca6216f408d59cadf33e.exe	39

C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe
"C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:928
- C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe
  "C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2784
- - C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe
    "C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1704
  - - C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe
      "C:\Users\Admin\AppData\Local\Temp\74660e011065ca6216f408d59cadf33e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2616

C:\Windows\system32\taskeng.exe
taskeng.exe {50F23011-F18B-4F58-8BE5-921A7F422179} S-1-5-21-3427588347-1492276948-3422228430-1000:QVMRJQQO\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362\74660e011065ca6216f408d59cadf33e.exe
  C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362\74660e011065ca6216f408d59cadf33e.exe --Task
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1368
- - C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362\74660e011065ca6216f408d59cadf33e.exe
    C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362\74660e011065ca6216f408d59cadf33e.exe --Task
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:1944

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

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
819d2f6d228f94bfebac03edbfa4bc64

SHA1
257acbdf2270c5285962d10460a77f422143cc8d

SHA256
e8b016b694a9c3224b6a405cf52010c03b7bc6c8948ecc8a3d9aaa39a18f6d47

SHA512
b81c03ca94d21cdb106281fa478dccd390e07bd0a03d0077952041f3d1d41a671ac9a3d4c97d41d9c8f74b14214abfcaff696a10d0615b603a7a9b1a67adde67

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
a9732f94e8189ae982055aaeac142330

SHA1
f4609e75c14b2be21f068087723db546e663a4ee

SHA256
4b7f7033f08d539f0d82ccf358de1a521c24a6ac43b4abcf586417e35890392c

SHA512
a8817e8e671d8777a82455c6018faf9a0009aefa47c63ea27897dfb4d6418d90fdd01311458bbe318eaed6b756473487961998003e91124831f7e7c4373bc402

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

Filesize
344B

MD5
fc763f390e83d8a5b212054d336cef50

SHA1
5f2c0ee4fe20c487b066f76ee56ce3335a1863e2

SHA256
8729ba3b78e65cee809171bc67b858a7368e0d75accf4b08c0348213e6e8b1e1

SHA512
9ad4074c86b24796511b5ae0fdf9b52bc60216bfb2a1e4426d3f2ca9978ca503ff51fe3c62a6e93e7e8e4e1d04f3b9755b8efa830f0e3aa131d0a8a0731e46b6

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

Filesize
392B

MD5
d23f9795d7c0acf364770c37386128c6

SHA1
517668881451a294a26d4670ae3cb6c646ddab10

SHA256
7b6e991202646dacc00b8c9410193308e7df37cec062b163fc5c175f41e74cc5

SHA512
804278767d950d87b37c61191020dc5c5718ce536984a1b4d80dfea654c5be74d6dbd8eb628e54783d0191c5b4c11a2cd0d2bdf7dbe395a4a96f5656150966e5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab9A5C.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar7189.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Users\Admin\AppData\Local\a2bc9af1-4e73-4266-b579-c91af4f52362\74660e011065ca6216f408d59cadf33e.exe

Filesize
723KB

MD5
74660e011065ca6216f408d59cadf33e

SHA1
0ad378f1f469f5c57a1516aa05139eee4bda5e8e

SHA256
de8f146808af12f7a609b39c56cf46d9d204ef2e717ff5b83422b7d7deb34739

SHA512
1cd8adc191f35d905cbd5e28806d578203501530e58d6fbc21bbb321cd23f2a77931ec055e80b17445a7c0470c77353d659f9e1c116d4fddeb45d7f06f81f218

Download Submit
memory/928-0-0x0000000000280000-0x0000000000312000-memory.dmp

Filesize
584KB

Download
memory/928-3-0x00000000045C0000-0x00000000046DB000-memory.dmp

Filesize
1.1MB

Download
memory/928-1-0x0000000000280000-0x0000000000312000-memory.dmp

Filesize
584KB

Download
memory/1368-72-0x0000000002D90000-0x0000000002E22000-memory.dmp

Filesize
584KB

Download
memory/1368-76-0x0000000002D90000-0x0000000002E22000-memory.dmp

Filesize
584KB

Download
memory/1704-28-0x0000000002D50000-0x0000000002DE2000-memory.dmp

Filesize
584KB

Download
memory/1704-29-0x0000000002D50000-0x0000000002DE2000-memory.dmp

Filesize
584KB

Download
memory/1944-90-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1944-80-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2612-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download