djvu | 4db18bb82c0143d95eea29fb1416348936007290889eb5ab1f5332d09db43bdb

General

Target

d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
Size

732KB
MD5

cdc4132b29e414f192431cf17c959a56
SHA1

a26f541c8130c404020d76d98b4fb4c3c9600f99
SHA256

d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701
SHA512

d85935b75ce1a78b026ccc2e015c1cf1e3013114a8ba0f2e48c2bc4d93cdbd913f18016214335c5111c491716f7a823e58366fb4a37778d32be78478ed128eef
SSDEEP

12288:HLtTB27VeNWombj8dJBpuz4I3hrJAb8hWzmYe9VOucjSdsdfyv:rtUJ6W7WEcENAbbqmSdsNyv

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qual
offline_id
KLbRmn6on3AXGFgDLGtd0IkHmV7uHw9VxlcxO5t1
payload_url
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/5104-2-0x0000000003F00000-0x000000000401B000-memory.dmp	family_djvu
behavioral2/memory/1196-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2004-35-0x0000000000400000-0x00000000020FF000-memory.dmp	family_djvu
behavioral2/memory/984-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/984-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4224	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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\05f68457-f24a-4bf9-9a5a-41a7d09f3c36\\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe\" --AutoStart"	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.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
29	api.2ip.ua
30	api.2ip.ua
34	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5104 set thread context of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 2004 set thread context of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
984	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
984	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 5104 wrote to memory of 1196	5104	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	95
PID 1196 wrote to memory of 4224	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	96
PID 1196 wrote to memory of 4224	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	96
PID 1196 wrote to memory of 4224	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	96
PID 1196 wrote to memory of 2004	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	97
PID 1196 wrote to memory of 2004	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	97
PID 1196 wrote to memory of 2004	1196	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	97
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100
PID 2004 wrote to memory of 984	2004	d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe	100

C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
"C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
  "C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1196
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\05f68457-f24a-4bf9-9a5a-41a7d09f3c36" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4224
- - C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
    "C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2004
  - - C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe
      "C:\Users\Admin\AppData\Local\Temp\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:984

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
c9be626e9715952e9b70f92f912b9787

SHA1
aa2e946d9ad9027172d0d321917942b7562d6abe

SHA256
c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4

SHA512
7581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
c7e87e013049a009f254e3aff341b8fb

SHA1
d691adf58f69109b017b5f63f08faa94d29094c6

SHA256
5675bc6ea39ee3b054fd5860f70b0800359df77c3b3729183987906fdce91062

SHA512
bcad8f2373558c37e58128d268fff4feadbad56c7aeb0146c5fcd1d4f924b12b4fbe31ce94e41edc2d678b2de41164f484c8c880e198c3028132973f219a5eeb

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
755b797a59a2ce590d3cd31f6e987a06

SHA1
f8b47c48ad5e17bfb8e01b8bf3961caf7fc374fb

SHA256
fb28f9a808ec066743773f45c5ce892086e26281c173b84dd716b3361c995921

SHA512
a78966c0cce870255d812b7257840df00248df6a5a6ae3a9e0a9f9d6b572b3946145917479f9ab33a6f7ef20234b887dd12f3e6e03e41c1292c01a971b9d4ae6

Download Submit
C:\Users\Admin\AppData\Local\05f68457-f24a-4bf9-9a5a-41a7d09f3c36\d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701.exe

Filesize
732KB

MD5
cdc4132b29e414f192431cf17c959a56

SHA1
a26f541c8130c404020d76d98b4fb4c3c9600f99

SHA256
d148dedc9b654f78a2ddd2298663df99d57d00cdec9e97a3722496cc51c60701

SHA512
d85935b75ce1a78b026ccc2e015c1cf1e3013114a8ba0f2e48c2bc4d93cdbd913f18016214335c5111c491716f7a823e58366fb4a37778d32be78478ed128eef

Download Submit
memory/984-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/984-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1196-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1196-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1196-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1196-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1196-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-35-0x0000000000400000-0x00000000020FF000-memory.dmp

Filesize
29.0MB

Download
memory/2004-25-0x0000000000400000-0x00000000020FF000-memory.dmp

Filesize
29.0MB

Download
memory/5104-1-0x0000000003E30000-0x0000000003EC6000-memory.dmp

Filesize
600KB

Download
memory/5104-2-0x0000000003F00000-0x000000000401B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads