djvu | af4484677bcc32b79a4938c21ca459fd0262ed50f61f77aef6cc415af4d1f7fd

Analysis

max time kernel
143s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 08:27

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General

Target

3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Size

816KB
MD5

cb2486fa86126752ae92a46652f59f5c
SHA1

86f016d0381fc144f35cdc2deaecea4fb52b3c36
SHA256

3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd
SHA512

a4eccabed937164d770b46fba075f33e2010d8c0106720a2f6a7b0f4f7e93b5cb0009e213cad5cd5e257676c42b14ed5145a9a6af2fa1cfeddd67691b5ebceae
SSDEEP

12288:c3VUDkblidXui83ugWj/MsnV5Od0pQy+lb6tCUFlCfs1MqrFY4kGjBv:9DYU+SM8zHpkeCU3Cfs1MqB6m

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vvew
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.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-QsoSRIeAK6 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: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2180-2-0x0000000001DF0000-0x0000000001F0B000-memory.dmp	family_djvu
behavioral1/memory/2192-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2680-70-0x0000000000400000-0x0000000000537000-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
2824	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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bb9a85e5-05bc-493e-b613-8260f6466d7a\\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe\" --AutoStart"	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.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 2180 set thread context of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2644 set thread context of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33

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	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
2680	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
2680	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2180 wrote to memory of 2192	2180	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	30
PID 2192 wrote to memory of 2824	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	31
PID 2192 wrote to memory of 2824	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	31
PID 2192 wrote to memory of 2824	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	31
PID 2192 wrote to memory of 2824	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	31
PID 2192 wrote to memory of 2644	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	32
PID 2192 wrote to memory of 2644	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	32
PID 2192 wrote to memory of 2644	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	32
PID 2192 wrote to memory of 2644	2192	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	32
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33
PID 2644 wrote to memory of 2680	2644	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	33

C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
"C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
  "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\bb9a85e5-05bc-493e-b613-8260f6466d7a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2824
- - C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
    "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2644
  - - C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
      "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2680

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
975fb6fc6c1f03502ccb9864eea29010

SHA1
933c59e4f28a1e64f1266ae4df2862d0659c3ad0

SHA256
c14a6f179dae08fa56b52bff11c154461cfc84f603ae8d13bd60317d4310c358

SHA512
1391b0202b9b75f2ae8ec58b345b2a6126b767651b459828cc00bf2bd6c17771224ac069f1b945dac255bbc518b178b079a136d5850aa9c4857d13040511bdd0

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

Filesize
342B

MD5
d63ea8c4556be4ce900f6d65c704f6bb

SHA1
a66508ba32cdbc68f2c265751a54d698259cf595

SHA256
32267d4af5df1bd11c9709b1909d2db513249512b67ef6265f02c9314dc8f18b

SHA512
6e5eaa4f3ec9d83a7e6d390ee98c6b8b19ca22a7a0e58b9b2282e38ca5d6787076c15a620a9dc8530fc6190924d25841c769f67c27f75c4a8df78f594d6361f2

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

Filesize
170B

MD5
16c5223c24f86f5c19e27bef86eecfaa

SHA1
f6317e852f8efeb87b824cc86cdda96bbe7ea812

SHA256
29e1fdb449f09d94581e83e34276d82b6845afb0ad465d683f234236e4bb95c4

SHA512
abfcdfe5fb37f79da14b2246ffd8a2993150239eb721e5e75c8a4ccbcc9edefbb900d40c5e5e5c3f1e2c76dc7c00e9e9baf929ba143299997298cb7c1c18c4e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab177.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\bb9a85e5-05bc-493e-b613-8260f6466d7a\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Filesize
816KB

MD5
cb2486fa86126752ae92a46652f59f5c

SHA1
86f016d0381fc144f35cdc2deaecea4fb52b3c36

SHA256
3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd

SHA512
a4eccabed937164d770b46fba075f33e2010d8c0106720a2f6a7b0f4f7e93b5cb0009e213cad5cd5e257676c42b14ed5145a9a6af2fa1cfeddd67691b5ebceae

Download Submit
memory/2180-7-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/2180-0-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/2180-2-0x0000000001DF0000-0x0000000001F0B000-memory.dmp

Filesize
1.1MB

Download
memory/2180-1-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/2192-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2644-30-0x0000000001D20000-0x0000000001DB1000-memory.dmp

Filesize
580KB

Download
memory/2644-31-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2644-35-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2680-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2680-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download