djvu | 8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

General

Target

2024090698157dc534755cc2cc6325500707f7d4stop.exe
Size

1.1MB
MD5

98157dc534755cc2cc6325500707f7d4
SHA1

59621075dfa80ee4a1691e24fbb95f7f9314dc04
SHA256

8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e
SHA512

9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8jWQHUq7:F0dwAYZt6C31WeTVRPOhj7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qqqw
offline_id
Gy1ekaHyw11ZDr43dKFxYo9wA3NxFYOUEc6Pwvt1
payload_url
http://lencu.top/dl/build01.exe

http://tzgl.org/files/1/build02.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-veBR09KNyi 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: 0377UIhfSd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d33-14.dat	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
2804	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\\baa9eccf-656c-4466-a5bc-3d3c1d74a7d1\\2024090698157dc534755cc2cc6325500707f7d4stop.exe\" --AutoStart"	2024090698157dc534755cc2cc6325500707f7d4stop.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

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 3 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	2024090698157dc534755cc2cc6325500707f7d4stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024090698157dc534755cc2cc6325500707f7d4stop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe
2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe
2728	2024090698157dc534755cc2cc6325500707f7d4stop.exe
2728	2024090698157dc534755cc2cc6325500707f7d4stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2804	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	31
PID 2504 wrote to memory of 2804	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	31
PID 2504 wrote to memory of 2804	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	31
PID 2504 wrote to memory of 2804	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	31
PID 2504 wrote to memory of 2728	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	32
PID 2504 wrote to memory of 2728	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	32
PID 2504 wrote to memory of 2728	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	32
PID 2504 wrote to memory of 2728	2504	2024090698157dc534755cc2cc6325500707f7d4stop.exe	32

C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\baa9eccf-656c-4466-a5bc-3d3c1d74a7d1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
a4048a88d7cd1da71490df6efa72f407

SHA1
b564d43e8f1fc0e51495adc4935e209826aa53e7

SHA256
1001fe8071cb602c300f33eee0929f14832216ec21b38d209af7e9feda68bf1b

SHA512
332d301ef1963944188749ee865da8ba3f2e7f81ebb489bb3a286653244c3abdc233777d67e9aa24161dfd97cb28696c5df1dedc56dccbc7df811f3e96e036a5

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

Filesize
170B

MD5
af1a9fae758aa671579f99a828d78a8f

SHA1
53433675e68067c1f2bd3fc40463d076d707f78e

SHA256
75391f0c0fd6190912e073aa96a84743905c1cdd483697762630db9960d619bd

SHA512
157e10da042d92ce4399c59af072f6b9bb68ad838590bb4fde2688534aa54860d148be920c84ae17077e2a442a1479b9da4c983f1c1ebd713e769b35801d03fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab92AE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\baa9eccf-656c-4466-a5bc-3d3c1d74a7d1\2024090698157dc534755cc2cc6325500707f7d4stop.exe

Filesize
1.1MB

MD5
98157dc534755cc2cc6325500707f7d4

SHA1
59621075dfa80ee4a1691e24fbb95f7f9314dc04

SHA256
8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

SHA512
9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads