djvu | 13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc

General

Target

13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
Size

733KB
MD5

04309713728b62d94c2ca28538a7eb4b
SHA1

ceb68284a8108519e35fd199e31b3bc6c5963f2a
SHA256

13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc
SHA512

5ea614ae0802c0b270091c674b69eade27f82036c5cf941d4b31b4a39181bb75eeca4a1534252d0be3285f6a323113d437c7e4b126f3a5861a04cda553c45915
SSDEEP

12288:hgVmCOp15uzBMXjCJpKy4t0EArfGiyXLvyA8hxEomz2+IGsZrkhOihCQgO0dDq:hh35nmWhA6iuLYOom/ZokhOihklq

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

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

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/2004-2-0x00000000026A0000-0x00000000027BB000-memory.dmp	family_djvu
behavioral1/memory/2556-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3504-37-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1628	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-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\245ab3cf-b8ac-44b2-b2e0-ef2d47d34f02\\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe\" --AutoStart"	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.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
20	api.2ip.ua
21	api.2ip.ua
26	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2004 set thread context of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2016 set thread context of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
3504	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
3504	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2004 wrote to memory of 2556	2004	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	97
PID 2556 wrote to memory of 1628	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	98
PID 2556 wrote to memory of 1628	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	98
PID 2556 wrote to memory of 1628	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	98
PID 2556 wrote to memory of 2016	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	99
PID 2556 wrote to memory of 2016	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	99
PID 2556 wrote to memory of 2016	2556	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	99
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101
PID 2016 wrote to memory of 3504	2016	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	101

C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
"C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
  "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\245ab3cf-b8ac-44b2-b2e0-ef2d47d34f02" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1628
- - C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
    "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
      "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3504

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

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Downloads

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

Filesize
1KB

MD5
f827bcc547aecf3d7bf08ac646ccce9c

SHA1
67c2d7717e4e91e2cadb33540697356f37db3ade

SHA256
21fb8da4c663f8593d2db6983b90a2f2317b84e8429cae17f9ee1da8549c4c96

SHA512
8a04ea4d9df7c0a04cfc75ebbf4c210c57801ffe9af9eb53bb0d58f623cac880ccc80a037f5aeeb400ab3b2e330e62513fb420ae2c6ff15f5c1c9777f0a19b59

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
4e09906b606c6a2403ded4b0e2490d8a

SHA1
cb32c73359255b5b62c11ea595cbf77597f3e674

SHA256
53ecc1dfcb640bd969e0697e67d8da2489ff248cec9b64fdd1e8afb2d259b03f

SHA512
999daf7dc8d033db1d9ad4619512ef45becbd6f2c05d80e40cafc01180690215f8067c1fd9b8309f26137e6412f28b3ba8911ea1879822c8c5645c177ca578fb

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

Filesize
392B

MD5
4c642b8edb88a46494844a02683166a3

SHA1
9544f4c39411e3ad24d72d9d8b52b9f3f36a6111

SHA256
d1c14cedbf8dfef0a640ec9e0b56492d4f63a365b926f346e83c370f8645a01c

SHA512
cb504fd188e14c35f797a211d4d718e73a8edf6658f7e6bd8ae2438f6d5f514b683f5a457346409bb25d3a17cbb15578c1a5144f4b00bd26e6f6e647c91fabcd

Download Submit
C:\Users\Admin\AppData\Local\245ab3cf-b8ac-44b2-b2e0-ef2d47d34f02\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe

Filesize
733KB

MD5
04309713728b62d94c2ca28538a7eb4b

SHA1
ceb68284a8108519e35fd199e31b3bc6c5963f2a

SHA256
13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc

SHA512
5ea614ae0802c0b270091c674b69eade27f82036c5cf941d4b31b4a39181bb75eeca4a1534252d0be3285f6a323113d437c7e4b126f3a5861a04cda553c45915

Download Submit
memory/2004-1-0x0000000002570000-0x0000000002609000-memory.dmp

Filesize
612KB

Download
memory/2004-2-0x00000000026A0000-0x00000000027BB000-memory.dmp

Filesize
1.1MB

Download
memory/2016-18-0x00000000009F0000-0x0000000000A8C000-memory.dmp

Filesize
624KB

Download
memory/2556-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3504-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads