djvu | ede6c139838d4476f23e923534f5ccd6cbc6f95c0b5eb571603964351b0babde

Analysis

max time kernel
147s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 05:39

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General

Target
rte466.exe
Size 700KB
Sample240907-gcfcmsxelm
SHA256 ede6c139838d4476f23e923534f5ccd6cbc6f95c0b5eb571603964351b0babde
MD5 6fe770140bef2979d73853565fe9774b
SHA1 23cc2ecd5d4f7fbd0f69efc956be47c4b8d17045
SHA512 ba527976645793cabe12db059afabaa6ab0556d267651a038298a02e0e8ebf1caed3fcf67d2c8a1c71bf86101fa9fd5cfb3fee4e9a5f83719dacbbb5b713f021
SSDEEP 12288:SY5hNVrD7hdDhkhqW9FEcBcnqENyj1lkMVV/8oMBcJ5377JLFy2k:Vf7XhdD0qW0cG+LkHcJDLFXk
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://zexeq.com/test2/get.php

Attributes

extension
.qapo
offline_id
VrBq0iLIRHjQLgVRLsN1WK8yFkTCRDCCvPkwnHt1
payload_url
http://uaery.top/dl/build2.exe

http://zexeq.com/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-zUVSNg4KRZ 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: 0663Iopd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/2436-7-0x0000000001E50000-0x0000000001F6B000-memory.dmp	family_djvu
behavioral1/memory/2040-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2040-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2040-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2040-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-77-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-78-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-80-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-81-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-82-0x0000000000400000-0x0000000000537000-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

pid	Process
2860	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\35806375-4000-488f-9594-04a1ae40d7f8\\rte466.exe\" --AutoStart"	rte466.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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 2040	2436	rte466.exe	30
PID 2848 set thread context of 2616	2848	rte466.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rte466.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rte466.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rte466.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rte466.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2040	rte466.exe
2040	rte466.exe
2616	rte466.exe
2616	rte466.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2436 wrote to memory of 2040	2436	rte466.exe	30
PID 2040 wrote to memory of 2860	2040	rte466.exe	32
PID 2040 wrote to memory of 2860	2040	rte466.exe	32
PID 2040 wrote to memory of 2860	2040	rte466.exe	32
PID 2040 wrote to memory of 2860	2040	rte466.exe	32
PID 2040 wrote to memory of 2848	2040	rte466.exe	33
PID 2040 wrote to memory of 2848	2040	rte466.exe	33
PID 2040 wrote to memory of 2848	2040	rte466.exe	33
PID 2040 wrote to memory of 2848	2040	rte466.exe	33
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34
PID 2848 wrote to memory of 2616	2848	rte466.exe	34

C:\Users\Admin\AppData\Local\Temp\rte466.exe
"C:\Users\Admin\AppData\Local\Temp\rte466.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\rte466.exe
  "C:\Users\Admin\AppData\Local\Temp\rte466.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\35806375-4000-488f-9594-04a1ae40d7f8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2860
- - C:\Users\Admin\AppData\Local\Temp\rte466.exe
    "C:\Users\Admin\AppData\Local\Temp\rte466.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2848
  - - C:\Users\Admin\AppData\Local\Temp\rte466.exe
      "C:\Users\Admin\AppData\Local\Temp\rte466.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2616

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

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
MD5 971c514f84bba0785f80aa1c23edfd79
SHA1 732acea710a87530c6b08ecdf32a110d254a54c8
SHA512 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
MD5 SHA1 SHA512

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 f076405c0e072f38721ceb71ead4a7e97d325f9c24b39187cf6555b8150a31a2
MD5 bb780aecb990a16281254b8e6e0a5b10
SHA1 b0da8ea9f09fbb889370eff2e2251fe7b7730805
SHA512 fe3f32f4a9fd6c6e17b6d38c1d074fcdba4337e034b34bbba070279880e669b157354f89af801c5555f870fc81ef4de68a7e5a46a9ff5e90289f8bd9b4087013
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 a39c3887fd4cb479e404a5a13778ee743b4dbd5085187ab242f10eb510a7c522
MD5 bdc578b8dc4b4404570506aaba4b7a2f
SHA1 4e51a0394eda134e363ebe3ee65f12f66b0c7e7d
SHA512 94addb448cc4dd71c42d958900c451ec94cf8a5bfcfe1edb2fa108da75c05283c29b6bef6c6e89c3b0468d2dc2e5b51399b94aa70df6fcd26718467ef09e1e2a
MD5 SHA1 SHA512

Submit Download

rte466.exe

Path C:\Users\Admin\AppData\Local\35806375-4000-488f-9594-04a1ae40d7f8\rte466.exe
Size 700KB
SHA256 ede6c139838d4476f23e923534f5ccd6cbc6f95c0b5eb571603964351b0babde
MD5 6fe770140bef2979d73853565fe9774b
SHA1 23cc2ecd5d4f7fbd0f69efc956be47c4b8d17045
SHA512 ba527976645793cabe12db059afabaa6ab0556d267651a038298a02e0e8ebf1caed3fcf67d2c8a1c71bf86101fa9fd5cfb3fee4e9a5f83719dacbbb5b713f021
SSDEEP 12288:SY5hNVrD7hdDhkhqW9FEcBcnqENyj1lkMVV/8oMBcJ5377JLFy2k:Vf7XhdD0qW0cG+LkHcJDLFXk
MD5 SHA1 SHA512 SSDEEP

Submit Download

build3.exe

Path C:\Users\Admin\AppData\Local\685470e1-c629-43c4-bea9-e8a4f91364b1\build3.exe
Size 437B
SHA256 ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692
MD5 6910426a598bc0b07dd6ca7c2faf5c22
SHA1 4304d65a08652b167453997e1464cc6ef034be23
SHA512 5e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952
MD5 SHA1 SHA512

Submit Download

CabDA87.tmp

Path C:\Users\Admin\AppData\Local\Temp\CabDA87.tmp
Size 70KB
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
SSDEEP 1536:gc257bHnClJ3v5mnAQEBP+bfnW8Ctl8G1G4eu76NWDdB34w18R5cBWcJAm68+Q:gp2ld5jPqW8LgeulxB3fgcEfDQ
MD5 SHA1 SHA512 SSDEEP

Submit Download

bowsakkdestx.txt

Path C:\Users\Admin\AppData\Local\bowsakkdestx.txt
Size 449B
SHA256 91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219
MD5 caa078f0348cda98328127c142e3bfed
SHA1 e38274d642c806a3affcca8f7e37b61f591c47e6
SHA512 2e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6
MD5 SHA1 SHA512

Submit Download

memory/2040-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2040-9-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2040-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2040-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2040-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2436-6-0x0000000000330000-0x00000000003C2000-memory.dmp

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memory/2436-1-0x0000000000330000-0x00000000003C2000-memory.dmp

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memory/2436-37-0x0000000001E50000-0x0000000001F6B000-memory.dmp

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memory/2436-0-0x0000000000330000-0x00000000003C2000-memory.dmp

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memory/2436-7-0x0000000001E50000-0x0000000001F6B000-memory.dmp

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memory/2616-66-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-60-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-82-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-81-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-80-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-77-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2616-78-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2848-28-0x0000000001CC0000-0x0000000001D52000-memory.dmp

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memory/2848-29-0x0000000000400000-0x000000000052E000-memory.dmp

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memory/2848-34-0x0000000000400000-0x000000000052E000-memory.dmp

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