djvu | 98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 16:36

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General

Target

98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
Size

783KB
MD5

2575092702d9b05dec712ca0c964bd09
SHA1

c9029bf47f3fb21d47dc34f851986aa8fc20b04f
SHA256

98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1
SHA512

c2dce62ba554face5a8df515c57d32f2b93fed685f178cd05aa9ca1fb01b387c48f88ba1a3a115074d008d2a761623f75cf1a2def0ebc7555ae5c3e7d1171099
SSDEEP

12288:h1zbf11nSrUsBQbbGOP1Zvor1Udxp3k0Aba53exm8tDuZuEgNV7i0fM:D111/DtKmdxplT5uxdtDOgN9P0

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.ghas
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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2316-2-0x00000000004F0000-0x000000000060B000-memory.dmp	family_djvu
behavioral1/memory/2328-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-72-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-73-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2276-74-0x0000000000400000-0x0000000000537000-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
2944	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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\aa6b0df0-1c02-4fa6-b7c7-053d2c6cd748\\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe\" --AutoStart"	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.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
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2660 set thread context of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34

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	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
2276	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
2276	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2316 wrote to memory of 2328	2316	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	30
PID 2328 wrote to memory of 2944	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	31
PID 2328 wrote to memory of 2944	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	31
PID 2328 wrote to memory of 2944	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	31
PID 2328 wrote to memory of 2944	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	31
PID 2328 wrote to memory of 2660	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	33
PID 2328 wrote to memory of 2660	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	33
PID 2328 wrote to memory of 2660	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	33
PID 2328 wrote to memory of 2660	2328	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	33
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34
PID 2660 wrote to memory of 2276	2660	98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe	34

C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
"C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
  "C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\aa6b0df0-1c02-4fa6-b7c7-053d2c6cd748" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2944
- - C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
    "C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2660
  - - C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe
      "C:\Users\Admin\AppData\Local\Temp\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2276

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
c11f289ecec22580ac6c36236d22a72d

SHA1
80af12c13b402f3fa28e06d3e1d7a085e90bf547

SHA256
94f5e3052faf3d7a67a065b31b21edc4b30b8de45024232b04e425abcf15b52e

SHA512
bd612139209066c2c2932a98961fb177ceb5ef948103a15c6d3bb57dd951f9a4372a299d71ae714d61bc145f3a1e689b9ca7b53d4d929fa6a66eeb2b90b20ad6

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

Filesize
342B

MD5
38136b6fe7eab8597f8ec72aa4c7a152

SHA1
4c51236e29e29df3ef319f58f9badf9613baf1e3

SHA256
0d86e4546beef326a7e5b64f7f1942c74c78f7b76d1ba6c785758773f7dab724

SHA512
1254f9e8b122a95cce5d1210d0902aee4c2c0a3275235ca960249fa253899a2eac7dafad98262ca5811b001f7c3e3717dbcee538c97e1af8f1b9b21150cb81bd

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

Filesize
170B

MD5
c625fb7ee576f3753e24c65abf79ffdf

SHA1
d6a5a4534b3363d2ac62bb3e090702dd70ae5c7a

SHA256
b284ce08109c4c0170edf86ce789f00f966c544daea7dbe36820506f1abf8a4b

SHA512
c0c776108989b87391765b0238d63c5ecc36b1c552779db3cae058d86017a948367e0eed8a60e241cf926fac85c3f33f965289ff647c3453fd9c80e5fcdc1d53

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab99B0.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\aa6b0df0-1c02-4fa6-b7c7-053d2c6cd748\98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1.exe

Filesize
783KB

MD5
2575092702d9b05dec712ca0c964bd09

SHA1
c9029bf47f3fb21d47dc34f851986aa8fc20b04f

SHA256
98e1edc2b7a9cc635d775cb995ff435ecfb6f86f6b4d9883e1e0afbb8f4b92f1

SHA512
c2dce62ba554face5a8df515c57d32f2b93fed685f178cd05aa9ca1fb01b387c48f88ba1a3a115074d008d2a761623f75cf1a2def0ebc7555ae5c3e7d1171099

Download Submit
memory/2276-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-74-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-73-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-72-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2316-2-0x00000000004F0000-0x000000000060B000-memory.dmp

Filesize
1.1MB

Download
memory/2316-1-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2316-0-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2316-7-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2328-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2328-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2660-38-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2660-33-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2660-32-0x00000000004F0000-0x0000000000581000-memory.dmp

Filesize
580KB

Download