djvu | 971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44

Analysis

max time kernel
147s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-11-2024 16:16

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General

Target

971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
Size

738KB
MD5

f69fbfb1df73fe4e156367497fb3e4e7
SHA1

6634982ba334a44db94a56fa72f83ca3d3276421
SHA256

971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44
SHA512

9fbc8183ce1a3d3cee8b7c16856b0e45107cfb20520a714a260b74220d83523bb54eabacad10c8e95d0913ffb6f2b538f14a9c1f4d06a72f16812ca4877b4ae5
SSDEEP

12288:AcMMxRUXZ+ODd3KezN1QccrtKtQ0r+ZLod5v1jV95ifyUA23mkbJT8yBA6S:AcKZ+Qd3KezNycftR+hizn8KcBbJYy4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.lkhy
offline_id
OxV6DGl22io8sqMOW1zCCOlzPiv4f1Vqzw7Y8zt1
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://we.tl/t-uNdL2KHHdy 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: 0851ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1520-2-0x0000000002190000-0x00000000022AB000-memory.dmp	family_djvu
behavioral1/memory/2072-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2072-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2072-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2072-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2704-56-0x0000000000400000-0x0000000000537000-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
2728	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\59994589-f258-4fa8-a0e0-c4f84d9e895a\\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe\" --AutoStart"	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 2792 set thread context of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.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	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
2704	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
2704	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 1520 wrote to memory of 2072	1520	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	30
PID 2072 wrote to memory of 2728	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	32
PID 2072 wrote to memory of 2728	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	32
PID 2072 wrote to memory of 2728	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	32
PID 2072 wrote to memory of 2728	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	32
PID 2072 wrote to memory of 2792	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	33
PID 2072 wrote to memory of 2792	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	33
PID 2072 wrote to memory of 2792	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	33
PID 2072 wrote to memory of 2792	2072	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	33
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35
PID 2792 wrote to memory of 2704	2792	971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe	35

C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
"C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
  "C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2072
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\59994589-f258-4fa8-a0e0-c4f84d9e895a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2728
- - C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
    "C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2792
  - - C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe
      "C:\Users\Admin\AppData\Local\Temp\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2704

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
a5f3b3f15ef462e803a8637eba68c548

SHA1
5f712fa007022afa0d5ddf545155f54e0cb7eddc

SHA256
097341abc0866b8201f10372f09ea6257bd24eb80de3913ff5bb7b07309751db

SHA512
eb4ae5f4ec22c9b7ead80d51b11d25a3b61ac6ee8c91cb0b0debeb7b73a815e405ae1df225466333fcf8cc4457ca004007e929e211c18053770f358561af2f11

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

Filesize
170B

MD5
f8c5932c78e09045bb26de037e71086c

SHA1
49aa636fa3fee4fb7530126da285de7c854cd35d

SHA256
831d19e7d4e90f246e4c616e6876c358faccd4c51cee15e3e39a036ec4dcddf9

SHA512
f567ac3afafab21cc550defb38f22f77424110449e6b18955adbd9826bd3463e0879643590aded5feddc7888421052cdc3c5655c6047cda3db48740d4dbaa0b5

Download Submit
C:\Users\Admin\AppData\Local\59994589-f258-4fa8-a0e0-c4f84d9e895a\971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44.exe

Filesize
738KB

MD5
f69fbfb1df73fe4e156367497fb3e4e7

SHA1
6634982ba334a44db94a56fa72f83ca3d3276421

SHA256
971e39310ce70dc7833890a3dd839d7a25565f2e31dac2ac83e67da5e1ed9e44

SHA512
9fbc8183ce1a3d3cee8b7c16856b0e45107cfb20520a714a260b74220d83523bb54eabacad10c8e95d0913ffb6f2b538f14a9c1f4d06a72f16812ca4877b4ae5

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabCD2E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1520-2-0x0000000002190000-0x00000000022AB000-memory.dmp

Filesize
1.1MB

Download
memory/1520-1-0x0000000000340000-0x00000000003D2000-memory.dmp

Filesize
584KB

Download
memory/1520-0-0x0000000000340000-0x00000000003D2000-memory.dmp

Filesize
584KB

Download
memory/2072-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2072-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2072-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2072-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2072-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2704-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2792-26-0x00000000002C0000-0x0000000000352000-memory.dmp

Filesize
584KB

Download
memory/2792-32-0x0000000000400000-0x00000000008AF000-memory.dmp

Filesize
4.7MB

Download
memory/2792-34-0x0000000000400000-0x00000000008AF000-memory.dmp

Filesize
4.7MB

Download