djvu | f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8

General

Target

JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
Size

847KB
MD5

1ef5d68fbad4354fd8314d3a6e209ee5
SHA1

f6c0a9281bfe0a528e2059e1330d0f690276279c
SHA256

f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8
SHA512

6eb0c85ca1d5b7fb32a3dd963dd7aaa5c8a23b8471f98f48e76ac3866f4c7b9eb69b26fd69290831ed13530596ff47e39615500b37726adbc74e93a6487d16ed
SSDEEP

24576:Nm3sShZV2UMDg5ydwfGe1KYiDgMe0P6DKk3Eh:43jZBMM5ydwl19z0yD7U

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/fhsgtsspen6/get.php

Attributes

extension
.ifla
offline_id
e8w5MeiBrZVoHLoloPm9MNlKBzXH70BB3B2KQ7t1
payload_url
http://zerit.top/dl/build2.exe

http://ugll.org/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3024-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp	family_djvu
behavioral2/memory/4688-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4688-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4688-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4688-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4688-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1816-35-0x0000000000400000-0x0000000000537000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2732	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f2e7455a-307f-4c84-b3bb-414ab4b85879\\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe\" --AutoStart"	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.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
16	api.2ip.ua
21	api.2ip.ua
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 1552 set thread context of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89

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	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
1816	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
1816	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 3024 wrote to memory of 4688	3024	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	83
PID 4688 wrote to memory of 2732	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	85
PID 4688 wrote to memory of 2732	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	85
PID 4688 wrote to memory of 2732	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	85
PID 4688 wrote to memory of 1552	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	86
PID 4688 wrote to memory of 1552	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	86
PID 4688 wrote to memory of 1552	4688	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	86
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89
PID 1552 wrote to memory of 1816	1552	JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.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:4688
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f2e7455a-307f-4c84-b3bb-414ab4b85879" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2732
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1552
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1816

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
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
3b8f067cfc9a28d44092b02624d63d7c

SHA1
d51996891cc6437f45475a378a1b21331153e3de

SHA256
d7e658d6022caa49594f0b6dbc1fb98f693bf5c97001c11309eeee3403ba235a

SHA512
3b98052d67416da9a6b04c9f16b052cd33c50e51616448b71f195e864bf9cd159adda4ac07c02c63b4c13528f916daecd72c53eaf628c9ca84422ed554f68dad

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

Filesize
170B

MD5
54df56aec80ef6b68e4baad0f1c9f1f5

SHA1
b8744e552b9a525273058cd128c29ba444bc117b

SHA256
45661088e8989cb28dfb3a8877df3181d9777347539fc25b545bbbdfeb9dc96f

SHA512
3c3f0265c9afebf02f1152a0cd132396981ad0dd33ad199e9b39f8c7e294f45769dd899f14a871ff79f6f1ea7111612f69ed2366579132f8fb99d8ff3119774d

Download Submit
C:\Users\Admin\AppData\Local\f2e7455a-307f-4c84-b3bb-414ab4b85879\JaffaCakes118_f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8.exe

Filesize
847KB

MD5
1ef5d68fbad4354fd8314d3a6e209ee5

SHA1
f6c0a9281bfe0a528e2059e1330d0f690276279c

SHA256
f2b73c3aae1ab811911dfdc39244d0df404f2ab047f133d523c966045611bbb8

SHA512
6eb0c85ca1d5b7fb32a3dd963dd7aaa5c8a23b8471f98f48e76ac3866f4c7b9eb69b26fd69290831ed13530596ff47e39615500b37726adbc74e93a6487d16ed

Download Submit
memory/1816-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1816-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3024-1-0x0000000004A30000-0x0000000004AD0000-memory.dmp

Filesize
640KB

Download
memory/3024-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp

Filesize
1.1MB

Download
memory/4688-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4688-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4688-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4688-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4688-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads