djvu | c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846

General

Target

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
Size

708KB
MD5

3b95bb63162de582ac3336d25a297b8b
SHA1

7591ae401abd0dad880dd1ceed76975f0e50ae5b
SHA256

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846
SHA512

10fa8404fe0ac6162930c49511e5c4290098f93d286841466c7232927ea3092ae655eeb34f8746c6e3ec72c33ab362a5a09423337d5f9a510e3a740b11950710

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.yqal
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: 0356gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2100-119-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/2100-118-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3196-121-0x0000000004AF0000-0x0000000004C0B000-memory.dmp	family_djvu
behavioral1/memory/2100-122-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/524-127-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/524-132-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

1300 icacls.exe

pid	process
1300	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\50446490-8120-4851-a15a-989380a18250\\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe\" --AutoStart"	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.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

9 api.2ip.ua
25 api.2ip.ua
8 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exec1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

description	pid	process	target process
PID 3196 set thread context of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 set thread context of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.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:

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exec1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

pid	process
2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
524	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
524	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exec1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exec1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
"C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3196

C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
"C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe"
2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2100

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\50446490-8120-4851-a15a-989380a18250" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1300

C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
"C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1176

C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
"C:\Users\Admin\AppData\Local\Temp\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:524

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
2da0b1694a734fc727fd14b74ef0f26a

SHA1
0a06fb3ab86efc412a62182eac4124a734558866

SHA256
7d23b87142a8226b6d27cb519c541ba542c164588fc7562caa0cafc851caf9ce

SHA512
18730de42f1d47163bc9daff84a8fdca56da7a0d9f18723025c74a0b7ca653c413cb7910be013229d5367a5a297c60cdead8c79fda56807184dcb2a1c3a1af15

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5
711d2d2d385c6f55e242fa4dd793284f

SHA1
e0e78b8e23760f2fb2845a61753b58748a4b57c0

SHA256
c915433efb2f968911d3ae49049f3387367d7e61d1bb50e054070e5ef7534ad4

SHA512
4926cfeed1c19a1064c14596f5fcfe72070563180fc59475c511bab3513468a2020a3b70e89c68b44c9e03b9ecc9d827acaff3bb6093cec406a5b8469ac83cf2

Download Submit
C:\Users\Admin\AppData\Local\50446490-8120-4851-a15a-989380a18250\c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
MD5
3b95bb63162de582ac3336d25a297b8b

SHA1
7591ae401abd0dad880dd1ceed76975f0e50ae5b

SHA256
c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846

SHA512
10fa8404fe0ac6162930c49511e5c4290098f93d286841466c7232927ea3092ae655eeb34f8746c6e3ec72c33ab362a5a09423337d5f9a510e3a740b11950710

Download Submit
memory/524-127-0x0000000000424141-mapping.dmp

Download
memory/524-132-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1176-125-0x0000000000000000-mapping.dmp

Download
memory/1300-123-0x0000000000000000-mapping.dmp

Download
memory/2100-119-0x0000000000424141-mapping.dmp

Download
memory/2100-122-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2100-118-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3196-121-0x0000000004AF0000-0x0000000004C0B000-memory.dmp

Filesize
1.1MB

Download
memory/3196-120-0x0000000004A30000-0x0000000004AC1000-memory.dmp

Filesize
580KB

Download

description	pid	process	target process
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 3196 wrote to memory of 2100	3196	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 2100 wrote to memory of 1300	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	icacls.exe
PID 2100 wrote to memory of 1300	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	icacls.exe
PID 2100 wrote to memory of 1300	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	icacls.exe
PID 2100 wrote to memory of 1176	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 2100 wrote to memory of 1176	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 2100 wrote to memory of 1176	2100	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe
PID 1176 wrote to memory of 524	1176	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe	c1780545e2c01c041c55913c9fb2c4baff27278477256aee89b1371e2de35846.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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