djvu | d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07

General

Target

d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
Size

1.1MB
MD5

37118cef94032f930d9ed40fa37144fe
SHA1

892d01b286a17e9faedec5fbda3d268842306393
SHA256

d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07
SHA512

c01e408709945cf912836d04a0e754d8cc7d1641e13cfa33809328498e031387e45b633fec885384a227002762d7f332bf82b58a8b0ff44a5c3433988991e9a1
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8RWQHUq7:F0dwAYZt6C31WeTVRPOhR7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://asvb.top/nddddhsspen6/get.php

Attributes

extension
.paas
offline_id
LQbDo3EfIVHxGuJOWRJdmxgY66rD6kiyqz4tzyt1
payload_url
http://asvb.top/files/penelop/updatewin1.exe

http://asvb.top/files/penelop/updatewin2.exe

http://asvb.top/files/penelop/updatewin.exe

http://asvb.top/files/penelop/3.exe

http://asvb.top/files/penelop/4.exe

http://asvb.top/files/penelop/5.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\54f3c963-c77c-4016-874e-179899ddcf79\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2888 icacls.exe

pid	process
2888	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\54f3c963-c77c-4016-874e-179899ddcf79\\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe\" --AutoStart"	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.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

4 api.2ip.ua
5 api.2ip.ua
9 api.2ip.ua
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

icacls.exed83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exed83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exed83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

pid	process
2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
2724	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
2724	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

description	pid	process	target process
PID 2356 wrote to memory of 2888	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	icacls.exe
PID 2356 wrote to memory of 2888	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	icacls.exe
PID 2356 wrote to memory of 2888	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	icacls.exe
PID 2356 wrote to memory of 2888	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	icacls.exe
PID 2356 wrote to memory of 2724	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
PID 2356 wrote to memory of 2724	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
PID 2356 wrote to memory of 2724	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
PID 2356 wrote to memory of 2724	2356	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe	d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

C:\Users\Admin\AppData\Local\Temp\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
"C:\Users\Admin\AppData\Local\Temp\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\54f3c963-c77c-4016-874e-179899ddcf79" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Users\Admin\AppData\Local\Temp\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe
  "C:\Users\Admin\AppData\Local\Temp\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2724

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

System Information Discovery

1

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
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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
48219c57cb0b632fb6385469fd9ee09f

SHA1
179e56b826b0ab2fcd73905a44c45cced532c1a4

SHA256
4fbfa69dde3f928b499e21d798478d330524a6d8bdb6e8e731d688a79edc62c6

SHA512
9999a60c5acf2486eb4d82a49a14cdc43ef01665f984439a8d95087ca131789a90891fb2ef7929583c3048b21c316b4d394ae24817ba35c8511dc1d74212f52c

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

Filesize
170B

MD5
bbcf16f35ad80a10594df85377d9b340

SHA1
f33e06ab848bb91284dddfff7ebb0d1dee44d0d4

SHA256
76bbeb409602d49db2f19578944b5b7306ba1682ca90721f9bea9fa61a4fd63f

SHA512
a545628f6f64131e416980bd35c65de61a57aaf385c26458bfd9ccea1d9331c60768ec77791781189f8725a2d6f4c88094ea3c28367005ed9554f9d0c96f2bf0

Download Submit
C:\Users\Admin\AppData\Local\54f3c963-c77c-4016-874e-179899ddcf79\d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07.exe

Filesize
1.1MB

MD5
37118cef94032f930d9ed40fa37144fe

SHA1
892d01b286a17e9faedec5fbda3d268842306393

SHA256
d83013d86062dab8e194ad14da91a214d2e539d1a9fff3e29c9e2e02f4bf9d07

SHA512
c01e408709945cf912836d04a0e754d8cc7d1641e13cfa33809328498e031387e45b633fec885384a227002762d7f332bf82b58a8b0ff44a5c3433988991e9a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabDE4E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads