djvu | 04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6

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
20/12/2024, 19:25

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General

Target

04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Size

876KB
MD5

41b0583e986bd5b29056fe47535545e3
SHA1

f7e44e9d530f70621a47e9f850da1bb5e2871960
SHA256

04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6
SHA512

beba9665b1635d2b07b726552fa23637a20cca144787833bfd77aa83cfa75f12fc4e2ea632efd08a6403eb6b646326d8f94fac282a81f05a929231e7f8ce4782
SSDEEP

12288:nPmDfAmqboRKh2b/fD3E735ylKz8MLzKs43aK55d6B4MXR+EQYV6nm/PfP6ultXm:nq7xRKhE/rEslmTLa55d6ShEq8PTc

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://tzgl.org/fhsgtsspen6/get.php

Attributes

extension
.yoqs
offline_id
Gy1ekaHyw11ZDr43dKFxYo9wA3NxFYOUEc6Pwvt1
payload_url
http://lencu.top/dl/build2.exe

http://tzgl.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-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: 0380UIhfSd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2208-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp	family_djvu
behavioral1/memory/1832-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1832-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1832-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1832-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1068-70-0x0000000000400000-0x0000000000537000-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
2756	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fab3dfe1-b6c8-4f0d-b20e-3b00cab167a1\\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe\" --AutoStart"	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.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
4	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2968 set thread context of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35

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	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 2208 wrote to memory of 1832	2208	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	31
PID 1832 wrote to memory of 2756	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	33
PID 1832 wrote to memory of 2756	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	33
PID 1832 wrote to memory of 2756	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	33
PID 1832 wrote to memory of 2756	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	33
PID 1832 wrote to memory of 2968	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	34
PID 1832 wrote to memory of 2968	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	34
PID 1832 wrote to memory of 2968	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	34
PID 1832 wrote to memory of 2968	1832	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	34
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35
PID 2968 wrote to memory of 1068	2968	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	35

C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
"C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
  "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\fab3dfe1-b6c8-4f0d-b20e-3b00cab167a1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2756
- - C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
    "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2968
  - - C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
      "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1068

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
7feace2a9dfb6042c2fbe5e070c64f33

SHA1
34f95b3d020fa0818abf035abcc1e73b5c35ab75

SHA256
fbe5cd886add8c51e23badda08ff550878b89ec53fbcfa5967bb6302079c8518

SHA512
03bcc16a502b36c373e5f07ac20168c2b6fc814edbaf07a505ce0b9b32c648f788e6fd0df28d18ba6a9df9b3273fad4ae78f20e5af9139f34397eb8e4f522bb2

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

Filesize
170B

MD5
6c339e60b61892a94577776f7d2d7a45

SHA1
56ca63987705c4ee1022824adc56b1e4579aa6f6

SHA256
ba6e3ced5ca8f497537d502660db9e16c3b0b694e9ebbbad4ddf5b44c6e7bae0

SHA512
339fdc2672802f2616fc7ac52b639a2f9e583af5c0b98d96db3072f900f3ebb05df0a56c7f238e8ff83a2632363e57dca3f51b889ace511070ab001be8f1a92d

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabE85C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\fab3dfe1-b6c8-4f0d-b20e-3b00cab167a1\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Filesize
876KB

MD5
41b0583e986bd5b29056fe47535545e3

SHA1
f7e44e9d530f70621a47e9f850da1bb5e2871960

SHA256
04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6

SHA512
beba9665b1635d2b07b726552fa23637a20cca144787833bfd77aa83cfa75f12fc4e2ea632efd08a6403eb6b646326d8f94fac282a81f05a929231e7f8ce4782

Download Submit
memory/1068-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1068-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1832-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1832-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1832-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1832-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1832-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2208-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2208-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2208-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp

Filesize
1.1MB

Download
memory/2208-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2968-36-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2968-30-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2968-29-0x0000000000230000-0x00000000002C2000-memory.dmp

Filesize
584KB

Download