MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


GandCrab


Vendor detections: 10


Intelligence 10 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff
SHA3-384 hash: 9d87e497040a0b6ca6f70f741e18ddce154e7cc4e2c450ecba0689d2b9cabfb8c2f3307f5162578a3a6dcbb645671149
SHA1 hash: f769f5157074955b3a52ddb85f33f544f878259e
MD5 hash: c303614241fba8598dd3f4ee5c74eb56
humanhash: cup-mexico-early-august
File name:ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff
Download: download sample
Signature GandCrab
Create hunting rule
File size:99'840 bytes
First seen:2021-02-27 16:10:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1839093d1fff859ea6647e5203f3ad35 (591 x GandCrab)
ssdeep 1536:lZZZZZZZZZZZZpXzzzzzzzzzzzzV9rXounV98hbHnAEMqqU+2bbbAV2/S2LNmHkD:5BounVyFHFMqqDL2/LgHkc2
Threatray 57 similar samples on MalwareBazaar
TLSH 97A36C0AB3E16293E1F25779FA747E66456E3D10BB249BDB09D348862D630F0293B713
Reporter c3rb3ru5d3d53c2
Tags:Gandcrab Ransomware


Avatar
c3rb3ru5d3d53c
@c3rb3ru5d3d53c Live Hunt

Intelligence

File Origin
# of uploads :
1
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff
Verdict:
Malicious activity
Analysis date:
2021-02-27 16:14:02 UTC
Tags:
trojan ransomware gandcrab
Link:
https://app.any.run/tasks/e54a1f3f-cefe-4efa-af4c-b92358558340

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Gandcrab
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119652/
Detection(s):
PUA.Win.Packer.PrivateExeProte-16
Create hunting rule

PUA.Win.Packer.AcprotectUltraprotect-1
Create hunting rule

Win.Ransomware.Gandcrab-6502432-0
Create hunting rule

Win.Ransomware.Gandcrab-6667060-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% subdirectories
Changing a file
DNS request
Connection attempt
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Setting a single autorun event
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Gandcrab ReflectiveLoader
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/620544
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to determine the online IP of the system
Found Tor onion address
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Performs many domain queries via nslookup
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses nslookup.exe to query domains
Yara detected Gandcrab
Yara detected ReflectiveLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 359264 Sample: tKleYulmNK Startdate: 27/02/2021 Architecture: WINDOWS Score: 100 56 nomoreransom.coin 2->56 58 nomoreransom.bit 2->58 60 4 other IPs or domains 2->60 64 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus / Scanner detection for submitted sample 2->68 70 7 other signatures 2->70 8 tKleYulmNK.exe 1 36 2->8         started        13 hgefvv.exe 2->13         started        15 hgefvv.exe 2->15         started        signatures3 process4 dnsIp5 62 ipv4bot.whatismyipaddress.com 66.171.248.178, 49713, 80 ALCHEMYNETUS United States 8->62 40 C:\Users\user\AppData\Roaming\...\hgefvv.exe, PE32 8->40 dropped 72 Contains functionality to determine the online IP of the system 8->72 74 Uses nslookup.exe to query domains 8->74 76 Performs many domain queries via nslookup 8->76 17 nslookup.exe 1 8->17         started        20 nslookup.exe 1 8->20         started        22 nslookup.exe 1 8->22         started        24 10 other processes 8->24 78 Antivirus detection for dropped file 13->78 80 Machine Learning detection for dropped file 13->80 file6 signatures7 process8 dnsIp9 42 nomoreransom.coin 17->42 48 2 other IPs or domains 17->48 26 conhost.exe 17->26         started        50 3 other IPs or domains 20->50 28 conhost.exe 20->28         started        52 3 other IPs or domains 22->52 30 conhost.exe 22->30         started        44 nomoreransom.coin 24->44 46 nomoreransom.coin 24->46 54 29 other IPs or domains 24->54 32 conhost.exe 24->32         started        34 conhost.exe 24->34         started        36 conhost.exe 24->36         started        38 7 other processes 24->38 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff/
Threat name:
Win32.Ransomware.GandCrab
Create hunting rule
Status:
Malicious
First seen:
2018-05-22 03:52:58 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
2d4fed9f16b3c4cece6d0f772cfb23e7b3a88406a704b05a10315a61f7d668e4
GandCrab
5f212359d21fb6c9bcebadbb24db187900b127c4484d74032f88e037f0cc4194
GandCrab
69d41dfefb4b76560ef874ecfa1ffcd56bff66ca61e6cb92cc460f1b03de21da
GandCrab
6db19a32d62294b199a3264982f659b02f64b6171889ebec8656b4f88bf76bf2
GandCrab
906f9aa0eced0c4603c39a8a631823b04e6f5815d78034749c8229e3fe71173c
GandCrab
a45ed06e7f6159d32a1b3d77300ee09c3d26b8470d6740e983f0c73447cbc414
GandCrab
ac8508ee470a60e9db4435d2b3942b9abc79d2aea776039213fe60ff683f493d
GandCrab
c1ceedcdbe3fda2d2fcf084e3cbf74060f0308c3bdf9f76f29dba5a13de715fd
GandCrab
f6ff1fffbf45e14ae626b363661ff66cfe25aa48fe03d66760526576efe9d324
GandCrab
fdcb6c2e449741672b666470e714aa45079688da012b27ac2b3db1e5182ac699
GandCrab
+ 47 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence upx
Link:
https://tria.ge/reports/210227-elwkwah4rx/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Adds Run key to start application
Enumerates connected drives
Unpacked files
SH256 hash:
ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff
MD5 hash:
c303614241fba8598dd3f4ee5c74eb56
SHA1 hash:
f769f5157074955b3a52ddb85f33f544f878259e
Detections:
win_gandcrab_auto
Create hunting rule
Link:
https://www.unpac.me/results/76292399-e612-4501-a1da-251319f4459c/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Filecoder
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ef3e8e00e22fc77b091a585eaa77d191339a60f0729d02e262ac8398cf6981ff

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/119652/

Comments