djvu | 153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a

Analysis

max time kernel
291s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-03-2024 04:49

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General

Target

153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
Size

694KB
MD5

ca13a11270387bf7560ad36d9b1a92ae
SHA1

439b23b2d6c42ea2c0c353ab2d3b94841b70c3c1
SHA256

153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a
SHA512

ae5d64ce30b14abb465685fc076f0081e14fcd4a84568b8140ef18bc7d9d3e4ebf0ce50c4bccb01fa608bb0dd705a6b6bc8b93886b1c6819b2cf72c874bb2617
SSDEEP

12288:HWz+FMz8Wjk0Ue7sqCY/Ur5rXvOpxNrVZrcKKYnqN26jqCW4Bpu95zSFdv:giEayVCY/0vOpnrVZQBYn0jV9pu9xSFF

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://habrafa.com/test1/get.php

Attributes

extension
.wisz
offline_id
4p0Nzrg1q0ND5of5Gtp2UBjthSXuE8VxnMrd4vt1
payload_url
http://brusuax.com/dl/build2.exe

http://habrafa.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/ace9dcf133a3c07499672522e2c6bd3a20240301114053/77eeff Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0853ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2980-2-0x0000000003930000-0x0000000003A4B000-memory.dmp	family_djvu
behavioral1/memory/1992-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1992-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1992-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1992-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-58-0x0000000000400000-0x0000000000537000-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
1320	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e7e0fef3-9ac7-4e27-b851-fee12ed0a6d1\\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe\" --AutoStart"	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.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 2980 set thread context of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2700 set thread context of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31

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
1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
2228	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
2228	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 2980 wrote to memory of 1992	2980	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	28
PID 1992 wrote to memory of 1320	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	29
PID 1992 wrote to memory of 1320	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	29
PID 1992 wrote to memory of 1320	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	29
PID 1992 wrote to memory of 1320	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	29
PID 1992 wrote to memory of 2700	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	30
PID 1992 wrote to memory of 2700	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	30
PID 1992 wrote to memory of 2700	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	30
PID 1992 wrote to memory of 2700	1992	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	30
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31
PID 2700 wrote to memory of 2228	2700	153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe	31

C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
"C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
  "C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e7e0fef3-9ac7-4e27-b851-fee12ed0a6d1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1320
- - C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
    "C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe
      "C:\Users\Admin\AppData\Local\Temp\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2228

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
285f2d7ac11b816c0b93dddd72f3f074

SHA1
70bfc113e962459afabde81294847754bf7ae540

SHA256
fa170ab755d01dd13745aa6c2bbc19a90b57ff0abf67574147a2389e97899939

SHA512
5c0148dd35a8a626d003269910b7ca283bd3619d658f968d04b268674f188e6f00ba5f26dc1f59847e02929770d70075546027fc5e1e2cff85ffb93c71b7797e

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
3f132bca4e0937af898aa5b8e9cb1885

SHA1
955e9186c58654baa4820ff072637c6c46bca480

SHA256
0947fdca0042012ab8aa688f602a144146732148bf4ddf8656925dd2cdba8aba

SHA512
b0b79eb221a0bd6df3020d4fe7b7c46c5ab82fdec441fada2fa73876ae897ef56b75eb926aeaf281980bff03e1f9a3f7aae0cc2be597242737997edd2f908f01

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

Filesize
344B

MD5
6aada7e9c55ccd2b127a64c655f1f8dc

SHA1
e0498163069b4e6ba5e04a16f5f4696828e78a45

SHA256
dd510b7b3e23538f9457c3439469a181b365cf6c6a52dd738bc7e17b5d7cac95

SHA512
839ca1ce1cf8e112f0628843931cbb7f6c4ceaba8144a1e40e207a0adbfeb7c3d6e17a056440c7a2e56d2f382115d23f62ac2f4025e6899f43a30400b963480a

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

Filesize
392B

MD5
e52361d99bc7dbb9799a45bfd96f1495

SHA1
71ff18c6bbe23bdb03887db4766599285912ada1

SHA256
9f032a1787e57076c0326536b78c8af93b670c6f6cdbc3aac09f59192c8750e6

SHA512
615fd8de929cd017a7a53038588cb8f4038911f918da71b6137b2bd66074d6fb2f8cca5323cdf2b904bb0cd98dfe312f6fce88fe591f41f5b40c6f75676b4acd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab46FF.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\e7e0fef3-9ac7-4e27-b851-fee12ed0a6d1\153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a.exe

Filesize
694KB

MD5
ca13a11270387bf7560ad36d9b1a92ae

SHA1
439b23b2d6c42ea2c0c353ab2d3b94841b70c3c1

SHA256
153622364f21181478b7afc792ce6ea675fbdd988a52f350615c161c4c694e9a

SHA512
ae5d64ce30b14abb465685fc076f0081e14fcd4a84568b8140ef18bc7d9d3e4ebf0ce50c4bccb01fa608bb0dd705a6b6bc8b93886b1c6819b2cf72c874bb2617

Download Submit
memory/1992-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1992-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1992-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1992-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1992-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2700-27-0x00000000002D0000-0x0000000000362000-memory.dmp

Filesize
584KB

Download
memory/2700-29-0x00000000002D0000-0x0000000000362000-memory.dmp

Filesize
584KB

Download
memory/2980-0-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download
memory/2980-1-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download
memory/2980-2-0x0000000003930000-0x0000000003A4B000-memory.dmp

Filesize
1.1MB

Download