djvu | 7f2f4250168dcf4d43ee844362bf1c697841ab64fa208b308ada76ca4ed9c4a8

General

Target

JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
Size

781KB
MD5

9f8d8cecc6c6b278fa88066e41243f11
SHA1

4fb7295f7dd4cac7719689d89b9f7d29d04e70b8
SHA256

7f2f4250168dcf4d43ee844362bf1c697841ab64fa208b308ada76ca4ed9c4a8
SHA512

c1fe5352b64bbc1f352a6c32818dec887222104327e42c172512f147d9ec27195f65cf4563dbaf501b8102c5bef3331c352673fb1ede7e19e237d62d8adeb515
SSDEEP

12288:Btp/iP6BOIouZsMyn3eoMXsyWFu7rm3pIBZRLFAQcavOUaOi0vcKSph/xD:B3qP6Vyu0Fum5I1L+hl7P/

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://rlrz.org/lancer/get.php

Attributes

extension
.zaps
offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
payload_url
http://znpst.top/dl/build2.exe

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

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/3304-1-0x0000000004D30000-0x0000000004E4B000-memory.dmp	family_djvu
behavioral2/memory/1148-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2204-37-0x0000000000400000-0x0000000000537000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1168	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\55bf3f2d-4ecd-43f9-8d3c-48e09ccbf42d\\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe\" --AutoStart"	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.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
11	api.2ip.ua
12	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3304 set thread context of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 640 set thread context of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86

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	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
2204	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
2204	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 3304 wrote to memory of 1148	3304	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	82
PID 1148 wrote to memory of 1168	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	83
PID 1148 wrote to memory of 1168	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	83
PID 1148 wrote to memory of 1168	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	83
PID 1148 wrote to memory of 640	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	84
PID 1148 wrote to memory of 640	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	84
PID 1148 wrote to memory of 640	1148	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	84
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86
PID 640 wrote to memory of 2204	640	JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.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:1148
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\55bf3f2d-4ecd-43f9-8d3c-48e09ccbf42d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1168
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:640
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2204

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
54881d88fb32dc0799c6a0c5772d354a

SHA1
6345a72aaed9910299614a34c46bcd06afd78896

SHA256
26c5a62b4614b9a6f3e14d0c42f64b522439086602b5aaf81b4cb1c32fdade93

SHA512
38059779227c9375411fd9d1f77e3406a275e6ca7a5da36f333c15361996dc73806147e26b3ed1192bb24f1944a360459c5e3e91025ed153dd3baf395f7c3eff

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

Filesize
170B

MD5
16a719739b1edf172512143bb556c8d8

SHA1
58419faf36b031bf5fab2fca3f9b0ad4d17c7e07

SHA256
b8af24d263398dbe11057efebf1114a2666426f18d5b279bdfc598136a96cb21

SHA512
ebb1f8e48b06d3c303e2dc16087ec4f9de088d6ff10fcdf7181e66ad51d07fb3d4ba87c54628b631fc2ed5a0e7ccf5a2ab986c68eecc99fa018923d7168436d1

Download Submit
C:\Users\Admin\AppData\Local\55bf3f2d-4ecd-43f9-8d3c-48e09ccbf42d\JaffaCakes118_9f8d8cecc6c6b278fa88066e41243f11.exe

Filesize
781KB

MD5
9f8d8cecc6c6b278fa88066e41243f11

SHA1
4fb7295f7dd4cac7719689d89b9f7d29d04e70b8

SHA256
7f2f4250168dcf4d43ee844362bf1c697841ab64fa208b308ada76ca4ed9c4a8

SHA512
c1fe5352b64bbc1f352a6c32818dec887222104327e42c172512f147d9ec27195f65cf4563dbaf501b8102c5bef3331c352673fb1ede7e19e237d62d8adeb515

Download Submit
memory/1148-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2204-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3304-0-0x0000000004C30000-0x0000000004CC1000-memory.dmp

Filesize
580KB

Download
memory/3304-4-0x0000000004C30000-0x0000000004CC1000-memory.dmp

Filesize
580KB

Download
memory/3304-1-0x0000000004D30000-0x0000000004E4B000-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