djvu | d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb

General

Target

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
Size

706KB
MD5

affc5f8ed8092772c39366f339521584
SHA1

defc52ea0693afffacc8593172e558f82f87cb5b
SHA256

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb
SHA512

d006d6691054fef51ab4359fe8806ea82ac88e9841da22214b35426f7a0cd8bbfd5ef373576a38a1db53a1d331e691e188611b30bbbc1b07bfb44a64892f0b52

Score

10^/10

djvu discovery persistence ransomware suricata

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.moia
offline_id
K3PMMX2aWwpnYby88Dzg7tmaIW7Tv0HMWvSyr7t1
payload_url
http://kotob.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-rIyEiK9ekc 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: 0355gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3800-115-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3800-116-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/2808-118-0x0000000004B60000-0x0000000004C7B000-memory.dmp	family_djvu
behavioral1/memory/3800-119-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/480-124-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/480-129-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1280 icacls.exe

pid	process
1280	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\28a22360-8afd-494c-bc6e-3895d0d28320\\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe\" --AutoStart"	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.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

8 api.2ip.ua
9 api.2ip.ua
16 api.2ip.ua

flow	ioc
8	api.2ip.ua
9	api.2ip.ua
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exed2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

description	pid	process	target process
PID 2808 set thread context of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 set thread context of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exed2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

pid	process
3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
480	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
480	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exed2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exed2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
"C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
  "C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe"
  2⤵
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\28a22360-8afd-494c-bc6e-3895d0d28320" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1280
- - C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
    "C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3684
  - - C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
      "C:\Users\Admin\AppData\Local\Temp\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:480

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Install Root Certificate

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

MD5
e15da05c12224abc690b1eb313a20137

SHA1
80f6284e35fa09eda4e69a5a866f052c9077e1f1

SHA256
9708014af393827b1df1614e6d4d99de56f13fbda613e2ead63416a9c2c6e31c

SHA512
4d41f757804943d5344476747024dd94aaa6d414d9b1652f9865927234d40c271a42468cde38c2bd68f6e833783ae8ea93727d2eb9e8c24263673eb8dd6b9937

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

MD5
2bef96fbf39da6a765ed4d36db41fc5a

SHA1
af8b93b370a8bfd932552f840d54da310b51c071

SHA256
9cf840b96cb69e5c7f2b93630f63e44c20ba7240ce29ffa7e5de6e648c57d3c8

SHA512
a05166997abf2f29a1867f2ed649555eb5b153448087025b0d1a77cc14f78da0052a81bfd44d360731ca8b6520646b0d3e51e8fbbc2e045b990505dd46fa24d7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

MD5
379a49ecab79105e8bc21cf76e94d999

SHA1
1fc724f6f71045f6602d8ef82ab25aee688ca265

SHA256
8f7f51d29197a95d83867c6bc5bdbf3d0d0445a9d6e95a3396eb6ea9f0014105

SHA512
640e7e127840f322f4519ee36a32dce4beb3345b03dca47c835d39991e9d5f77a6ee862250dbad35f316062e447577b87402983db489505456758adf66e88d8c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

MD5
8983d48d354e9e4f58ff34a13d2445f7

SHA1
a9d206a52ff3326aac81485ed6e8260f7a48900b

SHA256
821b3031f40a5b9979162fd6a1b4da40fa8c53c499b37218b66ce03202679629

SHA512
a61dd1532f3f9eb31e87d8a646cb4ecacf396a229a7d73a20b1a0d47010439ccdd0f435bbaeefe6a12e7fd42787aea530558c38c6c0c88c407457be85a001172

Download Submit
C:\Users\Admin\AppData\Local\28a22360-8afd-494c-bc6e-3895d0d28320\d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

MD5
affc5f8ed8092772c39366f339521584

SHA1
defc52ea0693afffacc8593172e558f82f87cb5b

SHA256
d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb

SHA512
d006d6691054fef51ab4359fe8806ea82ac88e9841da22214b35426f7a0cd8bbfd5ef373576a38a1db53a1d331e691e188611b30bbbc1b07bfb44a64892f0b52

Download Submit
memory/480-124-0x0000000000424141-mapping.dmp

Download
memory/480-129-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1280-120-0x0000000000000000-mapping.dmp

Download
memory/2808-118-0x0000000004B60000-0x0000000004C7B000-memory.dmp

Filesize
1.1MB

Download
memory/2808-117-0x0000000004AC0000-0x0000000004B51000-memory.dmp

Filesize
580KB

Download
memory/3684-122-0x0000000000000000-mapping.dmp

Download
memory/3800-115-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3800-119-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3800-116-0x0000000000424141-mapping.dmp

Download

description	pid	process	target process
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 2808 wrote to memory of 3800	2808	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3800 wrote to memory of 1280	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	icacls.exe
PID 3800 wrote to memory of 1280	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	icacls.exe
PID 3800 wrote to memory of 1280	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	icacls.exe
PID 3800 wrote to memory of 3684	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3800 wrote to memory of 3684	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3800 wrote to memory of 3684	3800	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe
PID 3684 wrote to memory of 480	3684	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe	d2b456c5e420136d6738296215031595cc1c8ee207c82705e7bab74af2455acb.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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