MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac. 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


Rook


Vendor detections: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac
SHA3-384 hash: c0d6a7253c8844de81eb0b70826f76a88ef350ac9acdc7a8cec608737634e2ba1727cfa078a4dd81546edccb85781eaa
SHA1 hash: 19ce538b2597da454abf835cff676c28b8eb66f7
MD5 hash: 6d87be9212a1a0e92e58e1ed94c589f9
humanhash: sad-violet-nuts-kentucky
File name:c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.bin
Download: download sample
Signature Rook
Create hunting rule
File size:415'232 bytes
First seen:2021-12-24 19:35:41 UTC
Last seen:2021-12-24 21:57:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 5248c5944a1d330e94f2cebc3ead99ee (1 x Rook)
ssdeep 6144:wmwG6/BAIy0q4KT1Y/Itk5bMTRiGaSD8KM/RiPl+MlfV50kR:wm16/BAIy0q4KT1DaMAGa0nJ
Threatray 52 similar samples on MalwareBazaar
TLSH T166948E19F7E044F8D977C278C6660616E6F2BC590361DBEF23A44AA51F23AE14E3E710
Reporter Arkbird_SOLG
Tags:exe Ransomware rook

Intelligence

File Origin
# of uploads :
2
# of downloads :
424
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac.bin
Verdict:
No threats detected
Analysis date:
2021-12-24 19:39:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6d20efa9-a7c8-4d21-bee2-db26fad0a473

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/216255/
Detection(s):
SecuriteInfo.com.Trojan.MulDrop19.12093.5611.6149.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file
Changing a file
Moving of the original file
Deleting volume shadow copies
Creating a file in the mass storage device
Forced shutdown of a browser
Encrypting user's files
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/3148/overview
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
CheckCmdLine
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware
Link:
https://www.filescan.io/uploads/61c621298991ba72b3960ba7/reports/cbdf303f-f268-48f1-be8c-7b684fa1a9be/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5a2f13f6-8cc8-4ce4-a928-60ff346c21d0
Result
Threat name:
Rook
Create hunting rule
Detection:
malicious
Classification:
rans
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/912588
Signature
Antivirus / Scanner detection for submitted sample
Deletes itself after installation
Deletes shadow drive data (may be related to ransomware)
Machine Learning detection for sample
May disable shadow drive data (uses vssadmin)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Yara detected Rook Ransomware
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac/
Threat name:
Win64.Ransomware.RookCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-12-06 03:03:00 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
33 of 43 (76.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ylkg2jllr6kjbskzt3vbd3hpdh66pvh52lpksnqez3r45khbokwa._file
Verdict:
malicious
Similar samples:
1237f60be32fedd4729cc33b077a902382c15c495327cfa55650ca66642506d1
Rook
3d030fbfbe328bc4f276d565854f89189094ddb46dc1c6d36e8e9a438227279f
Rook
40c12ee88f23181065155285438ec538b06892781a1a3be763bc32b6bb9c805b
Rook
467457b20fa5230a77027240f20bfac6130d66e1ca0e3abd3f89a067745e654f
Rook
57f8f1739037c713eac962b1a690490e645f402a3f0dd3309d65bf5292f7c6c1
Rook
92d30855da0de535afe7d2b432108880f5d3766767c09c493defcb6c05c10448
Rook
e9f1d411e9f40b3050fd6bec3caf316b0986bce3f8185b6529efc6586800fd4a
Rook
eb6b810f2cb85c0a1a028c53e4c346b3ec7601d1853758c3b8ce56eac6f96be8
Rook
f87be226e26e873275bde549539f70210ffe5e3a129448ae807a319cbdcf7789
Rook
feb365d784b06535c3bd3ab5c525e771521f0f7dcc71c8c3e800226fdb117085
Rook
+ 42 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
ransomware upx
Link:
https://tria.ge/reports/211224-ya81lsfbc8/
Behaviour
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Enumerates connected drives
Deletes itself
Modifies extensions of user files
Deletes shadow copies
Unpacked files
SH256 hash:
c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac
MD5 hash:
6d87be9212a1a0e92e58e1ed94c589f9
SHA1 hash:
19ce538b2597da454abf835cff676c28b8eb66f7
Link:
https://www.unpac.me/results/62c3ff12-7bfa-4f9f-a66c-3c4fc41f39cf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c2d46d256b8f9490c9599eea11ecef19fde7d4fdd2dea93604cee3cea8e172ac

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware
Rule name:MALWARE_Win_Babuk
Create hunting rule
Author:ditekSHen
Description:Detects Babuk ransomware

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/216255/

Comments