djvu | 8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

General

Target

2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
Size

1.1MB
MD5

98157dc534755cc2cc6325500707f7d4
SHA1

59621075dfa80ee4a1691e24fbb95f7f9314dc04
SHA256

8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e
SHA512

9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8jWQHUq7:F0dwAYZt6C31WeTVRPOhj7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qqqw
offline_id
Gy1ekaHyw11ZDr43dKFxYo9wA3NxFYOUEc6Pwvt1
payload_url
http://lencu.top/dl/build01.exe

http://tzgl.org/files/1/build02.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0008000000016de0-16.dat	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
2752	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.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\\61900dff-8d12-4804-a566-b93ab102a4af\\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe\" --AutoStart"	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.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
3	api.2ip.ua
4	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

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:

2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exeicacls.exe2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

pid	Process
2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
2692	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
2692	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

description	pid	Process	procid_target
PID 2792 wrote to memory of 2752	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	30
PID 2792 wrote to memory of 2752	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	30
PID 2792 wrote to memory of 2752	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	30
PID 2792 wrote to memory of 2752	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	30
PID 2792 wrote to memory of 2692	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	31
PID 2792 wrote to memory of 2692	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	31
PID 2792 wrote to memory of 2692	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	31
PID 2792 wrote to memory of 2692	2792	2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\61900dff-8d12-4804-a566-b93ab102a4af" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Users\Admin\AppData\Local\Temp\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2692

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
4eb25394e9e8b74adf4958832e5624c6

SHA1
d9bdd360b8cd6b833e53cf33c464d323bd2222fb

SHA256
4eb6c370e13eba561dfb49828b8202a1a68682467ffc82e0712090792a014d55

SHA512
68d9dfe487ea54af2ff0fef501de3053151c99217233e60c81d7c6d01091c7ec261d2a72a331fb81cbf6f953614ff603d178e017bf48ea8519b169984adf4849

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
1abb499eeeacdc0fecd2f614b9bf84b6

SHA1
18e5cefeda6185c588df84dd0d7441d9a30961eb

SHA256
637d4f593fd6fb6064bb0a827a2f9cf845b1415017b095d15b86e05b6f929243

SHA512
41a3d474bb0b4a118e6eecf1f1245ca88a62d0aaea391643d61896949c92356dd490647db38e5ea82192e5c56c921cdc7b26726b5e45b159533104011e1919ee

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

Filesize
170B

MD5
5561a1255479fb35e5b237349e74b615

SHA1
904d9f516de4aab33da1adf442d2e3b0e0d59ffd

SHA256
0bb5da1e7a3c1dd7dee99d5393dafca959328f34acc955ca143c9a8ac513f7a0

SHA512
1ca116ee9f7569860f16ce3d935b14da3b14794c1dc76162aebf83878c04cdba275396950ed64ce3cc514bde18965e0720785868858a7730f023820074a0ab0b

Download Submit
C:\Users\Admin\AppData\Local\61900dff-8d12-4804-a566-b93ab102a4af\2024-09-06_98157dc534755cc2cc6325500707f7d4_stop.exe

Filesize
1.1MB

MD5
98157dc534755cc2cc6325500707f7d4

SHA1
59621075dfa80ee4a1691e24fbb95f7f9314dc04

SHA256
8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

SHA512
9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab734C.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