djvu | 43f9435ff751208b02b3e982b6a65b524bd5b5956978b61d3c0a4c0c5ed008c2

Analysis

max time kernel
143s
max time network
132s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 10:30

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General

Target

d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
Size

815KB
MD5

e77149a738df525f2af09d73c0158662
SHA1

f044840a18c70c1a443b3f13f5a28c13a5f6f9c2
SHA256

d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506
SHA512

46ab52a6d817f0d53009ccf8c7256a3d7755bef1064073c726a689cfa1bf172f1ec6017b2a5e941548b73289e125acb9eb0a33fa787198a83d1d32769a657fdc
SSDEEP

12288:xq/uQD+rddH+kvKDcOfMZ3e9NIlFPJDe2LNZnV9ijsuynzNbOAGWsczLrkm:qDA5CDdQe9WlFPJq22MRlo0rk

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/2128-2-0x00000000004E0000-0x00000000005FB000-memory.dmp	family_djvu
behavioral1/memory/740-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2676-70-0x0000000000400000-0x0000000000537000-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
2596	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\730f45d1-e5ed-4a18-98e0-aa4b7ff166ea\\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe\" --AutoStart"	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.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
9	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2868 set thread context of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32

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	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
2676	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
2676	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 2128 wrote to memory of 740	2128	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	29
PID 740 wrote to memory of 2596	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	30
PID 740 wrote to memory of 2596	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	30
PID 740 wrote to memory of 2596	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	30
PID 740 wrote to memory of 2596	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	30
PID 740 wrote to memory of 2868	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	31
PID 740 wrote to memory of 2868	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	31
PID 740 wrote to memory of 2868	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	31
PID 740 wrote to memory of 2868	740	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	31
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32
PID 2868 wrote to memory of 2676	2868	d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe	32

C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
"C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
  "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\730f45d1-e5ed-4a18-98e0-aa4b7ff166ea" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2596
- - C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
    "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2868
  - - C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
      "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2676

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
8cf7576119d782a7786cc67ed6106f1b

SHA1
a8f85e92273ca1592e721b9d985ceb9cceda2064

SHA256
92afd423e7598ea4152e17518ce80a811c0fc0e5bf56fc100f86b926c308ebb2

SHA512
ccd1a888f44cfad37992436b10eaa2cd6f7a2c3a85987dd8d172dfd59c456180f2b38d82a11922e8544b4b25ffc15128c64f8cd82867329db76e2ccf2df10751

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

Filesize
342B

MD5
d25bea387b9be5fd2e77dce7194d3c51

SHA1
d8c8f770117b12a4e50a40a3e9aca9a83efa048d

SHA256
438ce3a52e3d4767b24fcbcac34a901e3693f7fa73f58ad1fcd44b1c9dac4f88

SHA512
cd40f07f310f07ed0cd383c90a50ce0392955161f36aa84d4a17c107e02309d81906b59ce144d699e8cc15433f33488bb187f1627d717863e34b07e77093ba40

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

Filesize
170B

MD5
b9c2eae18d00e1b065bbe14742b5f130

SHA1
e1cd14dc559f2a95204b8442b1303c13ba2ad166

SHA256
d953d6fa7ba931a7e066bd2de095e145fbfda910c03495f951e7844f8ab3376e

SHA512
ceccf115e573897d676c454bdfcdcb06f624df5882e7efde36654085d35e61357116abf3193edfce0e2f357f7ce6c937d0629e4723ee51cb3b5680cba320303c

Download Submit
C:\Users\Admin\AppData\Local\730f45d1-e5ed-4a18-98e0-aa4b7ff166ea\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe

Filesize
815KB

MD5
e77149a738df525f2af09d73c0158662

SHA1
f044840a18c70c1a443b3f13f5a28c13a5f6f9c2

SHA256
d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506

SHA512
46ab52a6d817f0d53009ccf8c7256a3d7755bef1064073c726a689cfa1bf172f1ec6017b2a5e941548b73289e125acb9eb0a33fa787198a83d1d32769a657fdc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab896B.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/740-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/740-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2128-2-0x00000000004E0000-0x00000000005FB000-memory.dmp

Filesize
1.1MB

Download
memory/2128-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2128-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2676-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2676-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-35-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2868-31-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2868-30-0x00000000002E0000-0x0000000000372000-memory.dmp

Filesize
584KB

Download