djvu | 82f0e9dfd4877c39903738a842045001359c431b114ca5cfa4e488a5c0257e06

Analysis

max time kernel
119s
max time network
45s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
29-08-2024 09:06

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General

Target

02b137b6b241a10dcb0b2fdbe5c1f090N.exe
Size

887KB
MD5

02b137b6b241a10dcb0b2fdbe5c1f090
SHA1

9a3642a88fbfb5dad28002fc59be862e67563acc
SHA256

82f0e9dfd4877c39903738a842045001359c431b114ca5cfa4e488a5c0257e06
SHA512

db143182e4df7bcc266f437191122f97aaeb451258dd0f8f17f3b9c51312098872faedeb8b1ae7c19f890ce54da71fc78e4225b77bd06d49965bcfcf5267408c
SSDEEP

12288:1G8ua3cRXmsmcU90p2aFZWI3ltIuEnnPJPYCGE1E2SIvhxfu0QnBYF7sFDF9R/:SaMkLBNanWKGuMRYDEO2SITQnBYZ+/

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.piiq
offline_id
7ucZviScWxXXYEE1znZMXmqHoguKJq5lmLcV78t1
payload_url
http://astdg.top/files/penelop/updatewin1.exe

http://astdg.top/files/penelop/updatewin2.exe

http://astdg.top/files/penelop/updatewin.exe

http://astdg.top/files/penelop/3.exe

http://astdg.top/files/penelop/4.exe

http://astdg.top/files/penelop/5.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-J9GjESeoLZ 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: 0308ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2988-5-0x0000000000B50000-0x0000000000C6B000-memory.dmp	family_djvu
behavioral1/memory/2104-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2576-60-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid	Process
2676	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

02b137b6b241a10dcb0b2fdbe5c1f090N.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5358ac74-11b0-47ae-8c7e-8a9374291c5e\\02b137b6b241a10dcb0b2fdbe5c1f090N.exe\" --AutoStart"	02b137b6b241a10dcb0b2fdbe5c1f090N.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.

Processes:

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe

description	pid	Process	procid_target
PID 2988 set thread context of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2924 set thread context of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.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

Processes:

02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exeicacls.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02b137b6b241a10dcb0b2fdbe5c1f090N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe

pid	Process
2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
2576	02b137b6b241a10dcb0b2fdbe5c1f090N.exe
2576	02b137b6b241a10dcb0b2fdbe5c1f090N.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe02b137b6b241a10dcb0b2fdbe5c1f090N.exe

description	pid	Process	procid_target
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2988 wrote to memory of 2104	2988	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	30
PID 2104 wrote to memory of 2676	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	32
PID 2104 wrote to memory of 2676	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	32
PID 2104 wrote to memory of 2676	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	32
PID 2104 wrote to memory of 2676	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	32
PID 2104 wrote to memory of 2924	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	33
PID 2104 wrote to memory of 2924	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	33
PID 2104 wrote to memory of 2924	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	33
PID 2104 wrote to memory of 2924	2104	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	33
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34
PID 2924 wrote to memory of 2576	2924	02b137b6b241a10dcb0b2fdbe5c1f090N.exe	34

C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe
"C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe
  "C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5358ac74-11b0-47ae-8c7e-8a9374291c5e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2676
- - C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe
    "C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2924
  - - C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe
      "C:\Users\Admin\AppData\Local\Temp\02b137b6b241a10dcb0b2fdbe5c1f090N.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2576

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
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
c05a7116bb83977b767b7324f2e3b196

SHA1
78c8244fffaf5926511f8e669f29cf8c1ff1f3fd

SHA256
898a601afe90ddff2c74384cbcc8e48362c10d1a18db3ea6531e984f350d9513

SHA512
5fd9ea270bad4e7785d29360ac8953928336c1ec6a5ecc3d65d69ebd80f1523a0f515f6f01e8400e87ed44514c38101e26a340dfc9910c9785045596413923a8

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

Filesize
170B

MD5
1ceb527a94e91f797d90841b85e7807c

SHA1
efcd7c9c1c11f6b4e980a4c2197e6556d164ba65

SHA256
53f75063abb61960f65a473af47f6ca512c419caac38ca28e1192173031164e0

SHA512
944a62574ef7e30dcca589bc3e9e742ebac49f1e36e38711a1d5af2dec45580697e33b732db77cfceeb6f23223243fec5d03a57338baa7f7f3008adb2d51ed41

Download Submit
C:\Users\Admin\AppData\Local\5358ac74-11b0-47ae-8c7e-8a9374291c5e\02b137b6b241a10dcb0b2fdbe5c1f090N.exe

Filesize
887KB

MD5
02b137b6b241a10dcb0b2fdbe5c1f090

SHA1
9a3642a88fbfb5dad28002fc59be862e67563acc

SHA256
82f0e9dfd4877c39903738a842045001359c431b114ca5cfa4e488a5c0257e06

SHA512
db143182e4df7bcc266f437191122f97aaeb451258dd0f8f17f3b9c51312098872faedeb8b1ae7c19f890ce54da71fc78e4225b77bd06d49965bcfcf5267408c

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabAAD0.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2104-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2924-35-0x0000000000400000-0x000000000097D000-memory.dmp

Filesize
5.5MB

Download
memory/2924-29-0x0000000000980000-0x0000000000A12000-memory.dmp

Filesize
584KB

Download
memory/2988-1-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2988-5-0x0000000000B50000-0x0000000000C6B000-memory.dmp

Filesize
1.1MB

Download
memory/2988-7-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2988-0-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download