djvu | bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554

General

Target

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
Size

695KB
MD5

bf5e3a1db8110761640f6de224bb837b
SHA1

f357f3b3284b0d155f03aa1767bb64bfc5d55d2b
SHA256

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554
SHA512

d3bf5d245233429bb8b01aa4766a8f21685c88f77d80675053f872c3d919cdc5473655d071a485e8b4783550b440d00b027f7ebf3e5cbabeefda3e1d9c1023c4

Score

10^/10

djvu discovery persistence ransomware suricata

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.robm
offline_id
Z5GGASEfY71jtxU3i3E8kzvrTJmY9oiZkjcSm0t1
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-Tjb0YqckGX 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: 0354gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2808-116-0x0000000002460000-0x000000000257B000-memory.dmp	family_djvu
behavioral1/memory/3500-117-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3500-118-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/3500-119-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2188-124-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/2188-130-0x0000000000400000-0x0000000000537000-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
Downloads MZ/PE file
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3960 icacls.exe

pid	process
3960	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.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\\323d08c3-0cd9-4606-a27c-7e7f4dce1a58\\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe\" --AutoStart"	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.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:

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exebcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

description	pid	process	target process
PID 2808 set thread context of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 set thread context of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.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:

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exebcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

pid	process
3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
2188	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
2188	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exebcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exebcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
"C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
  "C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe"
  2⤵
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3500
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\323d08c3-0cd9-4606-a27c-7e7f4dce1a58" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3960
- - C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
    "C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:856
  - - C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
      "C:\Users\Admin\AppData\Local\Temp\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2188

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
f38465988ba273bb822b84568d682669

SHA1
566d8520422def07cdd88475317401d28aafb381

SHA256
94f64b5a32e13b896b8cefb103757a4e4ae5d1c4df3f4ce6a8f0747e83ce5d7d

SHA512
68796c406f4cada9e11a467f4aea3d8e6555173c94a125b93e06219139b983c813f94d6da98b0849e01e26255ef16d10274d9e67aaca3aaa77e35b6ac64a52a4

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

MD5
bb5b6bfd10c107593232ff1254853e03

SHA1
0a8a2aa6efec37e8b425a91c90f27d9de1b125e9

SHA256
6783b1f10f27824de2708f3eec3d1d0e080ce94457b256afd8f6ce1409e6e8ba

SHA512
48973f31f7fcd5795fdfefb63fb5e6b41a375dc57b57052f632f6a8fecf47ae6ba90fafb0946a28b7b631c40095c1b8ad62cef20ce8a2111af5a750425519bf4

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

MD5
7adf3edff9b193fb5f0372e870195309

SHA1
767f07e45f18ace55f8e9d48bfde03636735724a

SHA256
2ee99fefb2b74a00cd247f580df6a4ad88b39f4a8e59f709f5efce8ea618da8a

SHA512
455821b5f34bf4132f32a46ba9d828ad73b98ff69e224d06e1f964a17e3885db56a7282bbea5c7b9c2de21cbf5eb1713840d8391d39054660720f1ee5e977135

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

MD5
7138091611565ec7e82bd3e2f19bb095

SHA1
70d61b458e580c9abba6a72aefc7a0549580b4ad

SHA256
2fd650a1d6da87e1caafa3fd271043c92499fa8ee6ba75d28c6438a3b48de52f

SHA512
bd8ed568e0c729dd9779ac223722bfede5e888526eb069506ed0d3b3d60a3566a32f161ca8e541065b63c58a0ff53630f28982d724ad77c76c7520969c35f034

Download Submit
C:\Users\Admin\AppData\Local\323d08c3-0cd9-4606-a27c-7e7f4dce1a58\bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

MD5
bf5e3a1db8110761640f6de224bb837b

SHA1
f357f3b3284b0d155f03aa1767bb64bfc5d55d2b

SHA256
bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554

SHA512
d3bf5d245233429bb8b01aa4766a8f21685c88f77d80675053f872c3d919cdc5473655d071a485e8b4783550b440d00b027f7ebf3e5cbabeefda3e1d9c1023c4

Download Submit
memory/856-122-0x0000000000000000-mapping.dmp

Download
memory/856-129-0x0000000000560000-0x000000000060E000-memory.dmp

Filesize
696KB

Download
memory/2188-124-0x0000000000424141-mapping.dmp

Download
memory/2188-130-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2808-116-0x0000000002460000-0x000000000257B000-memory.dmp

Filesize
1.1MB

Download
memory/2808-115-0x00000000023C0000-0x0000000002452000-memory.dmp

Filesize
584KB

Download
memory/3500-119-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3500-118-0x0000000000424141-mapping.dmp

Download
memory/3500-117-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3960-120-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 2808 wrote to memory of 3500	2808	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 3500 wrote to memory of 3960	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	icacls.exe
PID 3500 wrote to memory of 3960	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	icacls.exe
PID 3500 wrote to memory of 3960	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	icacls.exe
PID 3500 wrote to memory of 856	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 3500 wrote to memory of 856	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 3500 wrote to memory of 856	3500	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe
PID 856 wrote to memory of 2188	856	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe	bcbad637c67d4ff28e711d3c98ba597e396f6c7da6dc20666630db8241422554.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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