djvu | cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f

General

Target

JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Size

851KB
MD5

7cd4f8cac9361f89f842f325d930788b
SHA1

4e28750ad22ade1f19c8306d0f060b89f34847cc
SHA256

cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f
SHA512

c00e0eb2042ea93cf6270548025338c0f42ec244100a50b7bb33ccc643370e136cd3c078a3cf16285752bcb4b7d820c88aba4fd7fe5663a947b3265233767aa9
SSDEEP

24576:StAgUMn8lZymIsJ3pagaDpVZL3EiQZQp5YxdciFNJJ:YwrF57KDL3Nk2ux9Fb

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/test1/get.php

Attributes

extension
.dfwe
offline_id
eBNgvyGQV1Hmt9DBdxVRs8qPi1agsS7OaohPmit1
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 17 IoCs

resource	yara_rule
behavioral2/memory/2872-2-0x00000000022D0000-0x00000000023EB000-memory.dmp	family_djvu
behavioral2/memory/3052-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3052-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3052-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-39-0x0000000000400000-0x0000000000537000-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_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2968	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\\9e00bb99-012b-494b-bf9f-cda0fb2188ed\\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe\" --AutoStart"	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.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
7	api.2ip.ua
8	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 4476 set thread context of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.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_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
2304	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
2304	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 2872 wrote to memory of 3052	2872	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	82
PID 3052 wrote to memory of 2968	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	83
PID 3052 wrote to memory of 2968	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	83
PID 3052 wrote to memory of 2968	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	83
PID 3052 wrote to memory of 4476	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	84
PID 3052 wrote to memory of 4476	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	84
PID 3052 wrote to memory of 4476	3052	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	84
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86
PID 4476 wrote to memory of 2304	4476	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.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:3052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9e00bb99-012b-494b-bf9f-cda0fb2188ed" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2968
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4476
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2304

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
053afa975c6375e7ddce3df6d0647143

SHA1
48d42ea411c1de8c49e3c67364a76d744d03741a

SHA256
4bf6e712e7d03258ab09d8f98431529c23be189e46a08a322f84fe35093ad90f

SHA512
f46a95f2a7e2f00cc3383c7b255dcb13c1c882d9ee271691ded33331a4ec149589fd5e75c5dd605def6c8383f0894878d5157369503549fd7c2876c7cf2e9183

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

Filesize
170B

MD5
6d8b6233931a4f124b33f34f0dbba34c

SHA1
b139e26ad74301e8e60a53ea317c6edda1e8aed5

SHA256
71e77c6a150b7f7ed8b6029d954f5316b2b4d1f6d7b315291f709cbfe1b0481b

SHA512
038692b89f682b5e9b57569a338076e32e1ae1c163e6e5bc2fb88d64292ef72989ab3feb480e0751d65b1578af81c1878f251a87c6e1daaa5f4f26f8884f1431

Download Submit
C:\Users\Admin\AppData\Local\9e00bb99-012b-494b-bf9f-cda0fb2188ed\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Filesize
851KB

MD5
7cd4f8cac9361f89f842f325d930788b

SHA1
4e28750ad22ade1f19c8306d0f060b89f34847cc

SHA256
cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f

SHA512
c00e0eb2042ea93cf6270548025338c0f42ec244100a50b7bb33ccc643370e136cd3c078a3cf16285752bcb4b7d820c88aba4fd7fe5663a947b3265233767aa9

Download Submit
memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2872-1-0x0000000000A30000-0x0000000000ACF000-memory.dmp

Filesize
636KB

Download
memory/2872-2-0x00000000022D0000-0x00000000023EB000-memory.dmp

Filesize
1.1MB

Download
memory/3052-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4476-23-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/4476-19-0x0000000000400000-0x0000000000516000-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