MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53. 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


Formbook


Vendor detections: 17


Intelligence 17 IOCs YARA 2 File information Comments
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SHA256 hash: ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53
SHA3-384 hash: 7aaae38ee6543772596f2cd1c8c530a525f8b38049826833d4b21bea39e9418b681216a650b0064b128ecaeeb4b51590
SHA1 hash: cec044b21cf8a2cb280dadb6b842675e71cb1745
MD5 hash: 2e8c12638c2405967c54475f8a9fb9db
humanhash: utah-vermont-sierra-failed
File name:rcomutationoda.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:856'064 bytes
First seen:2023-03-28 10:48:43 UTC
Last seen:2023-03-29 10:48:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:jtbyZtmbKlAYbVQHFCTGUB3afYFSYROXGc2fvqhHYCN80hBCvtD:jIzmbKlAmVcCTtkYvRNv6lNFhBCvtD
Threatray 2'541 similar samples on MalwareBazaar
TLSH T14B057D7D9ED5F936F63CD279EEDCD822A0A88BD3AF12C93359D2061D8E11412B4CA41D
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 67161e09406c8e4f (2 x Formbook)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
282
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
rcomutationoda.exe
Verdict:
Malicious activity
Analysis date:
2023-03-28 10:50:44 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/51e82bba-e943-43f9-a924-6fdde92786a3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/378139/
Detection(s):
Porcupine.MSIL.GenKryptik.GIBO.108360.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed virus
Link:
https://www.filescan.io/uploads/6422c62180ca4ca1ff59c940/reports/aa33b2b4-566e-4e43-841f-bc0420ca5821/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b4f8ec47-1ef7-419b-9072-65a82ff53d69
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1203347
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 836259 Sample: rcomutationoda.exe Startdate: 28/03/2023 Architecture: WINDOWS Score: 100 64 Snort IDS alert for network traffic 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus detection for URL or domain 2->68 70 9 other signatures 2->70 10 rcomutationoda.exe 6 2->10         started        14 lhjsKnhJHJWGg.exe 5 2->14         started        process3 file4 44 C:\Users\user\AppData\...\lhjsKnhJHJWGg.exe, PE32 10->44 dropped 46 C:\Users\user\AppData\Local\...\tmp7332.tmp, XML 10->46 dropped 48 C:\Users\user\...\rcomutationoda.exe.log, ASCII 10->48 dropped 78 Uses schtasks.exe or at.exe to add and modify task schedules 10->78 80 Tries to detect virtualization through RDTSC time measurements 10->80 82 Injects a PE file into a foreign processes 10->82 16 rcomutationoda.exe 10->16         started        19 schtasks.exe 1 10->19         started        21 rcomutationoda.exe 10->21         started        84 Multi AV Scanner detection for dropped file 14->84 86 Machine Learning detection for dropped file 14->86 23 lhjsKnhJHJWGg.exe 14->23         started        25 schtasks.exe 1 14->25         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 16->56 58 Maps a DLL or memory area into another process 16->58 60 Sample uses process hollowing technique 16->60 62 Queues an APC in another process (thread injection) 16->62 27 explorer.exe 2 6 16->27 injected 31 conhost.exe 19->31         started        33 conhost.exe 25->33         started        process8 dnsIp9 50 www.inyeculinary.com 74.208.236.157, 49700, 80 ONEANDONE-ASBrauerstrasse48DE United States 27->50 52 www.hjd387.com 172.67.181.165, 49699, 80 CLOUDFLARENETUS United States 27->52 54 www.duraveritaswines.com 27->54 88 System process connects to network (likely due to code injection or exploit) 27->88 35 chkdsk.exe 27->35         started        38 cmstp.exe 27->38         started        signatures10 process11 signatures12 72 Modifies the context of a thread in another process (thread injection) 35->72 74 Maps a DLL or memory area into another process 35->74 76 Tries to detect virtualization through RDTSC time measurements 35->76 40 cmd.exe 1 35->40         started        process13 process14 42 conhost.exe 40->42         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-03-28 02:50:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
21 of 36 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zjefcd7xvvldtemcsjzcvwvmineu4q6ihksuhfid6lbgmkbulnjq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
01ab7eab84acdfbdf2f3addd8894d10cfc7993c11c7cfb3754fb649d9be86264
Formbook
4e658306b0e3cfef3c635ce8144fc856bf0de5d1f7c1c7f480a18ba3998fcd63
Formbook
6f4246a44c4b69ed8cc30d0583be906c7a8040216321889da1bd74ba7815aedd
Formbook
75f95b9c0daa55a9d00d3fdc76b74a142314da0f225e6a7fcec22a0582d392d5
Formbook
a5976236ba0b3e31a6dd09af3abe7d0121a4053bb22669869a874d1ba97bd495
Formbook
b846523d8b67f881870a47eca4690dde8454c30fbf50660fc023578c145c0143
Formbook
d0f12689eacf1ad6c798d62635bf7f18a855264a42e072ca9a2cb6a742a39dba
Formbook
f3bc0aabd3ffd26912977ae43d90b5ee187da63436b4395489f75a13012e7dda
Formbook
+ 2'531 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:n13e rat spyware stealer trojan
Link:
https://tria.ge/reports/230328-mwnq1scc2v/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Formbook payload
Formbook
Unpacked files
SH256 hash:
27688fe856b60a996711a64829ee298f641699283ae87e8b74fda195fb2360f7
MD5 hash:
6f15fb76756af11cc002cc4e43f70240
SHA1 hash:
0ec009516e1acd4fae5de124e6ba4af9c5ad15c2
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/c35fa7a1-a224-4c34-ba5c-5c040d402a5c/
Parent samples :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 hash:
702e82d7aaf1380f27fa6f20ac4617d56d8d8a92615a450e20f9c0985df71fb2
MD5 hash:
cc9236dd89a2028327f8ac37d028a0e7
SHA1 hash:
756cceb3fe1d265d25e4e1f4286e534ff6c6d551
Link:
https://www.unpac.me/results/c35fa7a1-a224-4c34-ba5c-5c040d402a5c/
SH256 hash:
ea8d4c91ec5bba5e1db6c17730d7ba5cdbb5ff3c1a777f70c90e91ce599d9b5d
MD5 hash:
27f5124bf8f451bca8d8a15c73c4f521
SHA1 hash:
5fd557e109b8fd1c3b362b64f0ba9f1600c07211
Link:
https://www.unpac.me/results/c35fa7a1-a224-4c34-ba5c-5c040d402a5c/
SH256 hash:
ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53
MD5 hash:
2e8c12638c2405967c54475f8a9fb9db
SHA1 hash:
cec044b21cf8a2cb280dadb6b842675e71cb1745
Link:
https://www.unpac.me/results/c35fa7a1-a224-4c34-ba5c-5c040d402a5c/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ca48510ff7ad/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe ca48510ff7ad5639918292722adaac43494e43c83aa5439503f2c26628345b53

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/378139/

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