djvu | d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41

General

Target

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
Size

715KB
MD5

6569ef48c4f229217bef9fe8837ef946
SHA1

9912918d36308b8f8a5067dd25f54ffb248119ff
SHA256

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41
SHA512

364526084791433654c7616a9b90365c609d9d5dd344ace62a0fb886c917666fdbe01ac07e0c08e836b138bc300c365726f6a5cf3a15ce116d5dc529c2dc3678
SSDEEP

12288:QI0+ELwoNhmiolHa63qhto0070i2Jb6mHhzhrMSUi9Mjz:QImMRz63o00Ii+pH55MSUkMjz

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3360-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp	family_djvu
behavioral1/memory/2256-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2256-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2256-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2256-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2256-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2664-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2032 icacls.exe

pid	process
2032	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\faae9fb0-fbd3-44b9-a53f-c2b02454108c\\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe\" --AutoStart"	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.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
19 api.2ip.ua
7 api.2ip.ua

flow	ioc
8	api.2ip.ua
19	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exed24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

description	pid	process	target process
PID 3360 set thread context of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 set thread context of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exed24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

pid	process
2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
2664	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
2664	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exed24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exed24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
"C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3360

C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
"C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2256

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\faae9fb0-fbd3-44b9-a53f-c2b02454108c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2032

C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
"C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2108

C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
"C:\Users\Admin\AppData\Local\Temp\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
3bfb237d95f9c34465d50360f39b3ceb

SHA1
2cdee845ea6ebbd3cd0466b0eae4752842de86cc

SHA256
2ceaddb29268e6112e7aa95722894fb061238ad4e2b247ce23595609daa5eb8d

SHA512
da55bf0fd898acda5dfd2366a96d439807e502c763dca35c3a119c3ab45f6e3d821a1e3fd29858e333606ef0e822f3373b9cb8c41d95736131bb001ad5b6a16f

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
225034590538d112123ff700c302f2f6

SHA1
f5b41cc6c33064e1827b1cbf71d77bd50ca375eb

SHA256
a80a5a69648d5dae7bdda6caea791fbd600c4544f0daa0c39c90807fa79db8a7

SHA512
4564f4997637174e8e335dc5e5e6d500d109ba58cd85804996b210de0fb57f11dc05c7662eb657043c72b1afed7845d33f216d6ffac53e4b5a64fb8327222515

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
5ceaafa4477739a1fd6de4960b3473f5

SHA1
0da1a08012b33bc6df69902cc86667437ec6c187

SHA256
2667391f6f4477180a649ab82ff3853755a2703aa578680db16df515c583f0d1

SHA512
742210e18f440ae117663ce347dd45cc5a9555301880e070bb17ada3f0681c5c1af8cba905a1061a51c8eca593b36d07227862ea963a47b4dc5f500350951db4

Download Submit
C:\Users\Admin\AppData\Local\faae9fb0-fbd3-44b9-a53f-c2b02454108c\d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
Filesize
715KB

MD5
6569ef48c4f229217bef9fe8837ef946

SHA1
9912918d36308b8f8a5067dd25f54ffb248119ff

SHA256
d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41

SHA512
364526084791433654c7616a9b90365c609d9d5dd344ace62a0fb886c917666fdbe01ac07e0c08e836b138bc300c365726f6a5cf3a15ce116d5dc529c2dc3678

Download Submit
memory/2256-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2256-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2256-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2256-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2256-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2664-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3360-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp

Filesize
1.1MB

Download
memory/3360-1-0x00000000049A0000-0x0000000004A32000-memory.dmp

Filesize
584KB

Download

description	pid	process	target process
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 3360 wrote to memory of 2256	3360	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2256 wrote to memory of 2032	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	icacls.exe
PID 2256 wrote to memory of 2032	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	icacls.exe
PID 2256 wrote to memory of 2032	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	icacls.exe
PID 2256 wrote to memory of 2108	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2256 wrote to memory of 2108	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2256 wrote to memory of 2108	2256	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe
PID 2108 wrote to memory of 2664	2108	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe	d24df21a140e21ba0a8b0b43cfb5050d87ec847ad53fc0e9b6a98e654d4a0b41.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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