MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: 73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266
SHA3-384 hash: b070a3cfbf589b5575610204f40cbcfe1d64d0019bd8b081c43eab112c437e47894855cf02ae8d3854df99aba8056a68
SHA1 hash: 2236a938dbf0bcc3f6f26fcf06d08c3204d6c1f2
MD5 hash: 2b5fb0e5ce50f49493e1962b67cb4088
humanhash: illinois-oscar-fanta-mississippi
File name:New Purchase Order #4522028497.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:448'000 bytes
First seen:2022-01-13 05:05:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:l9xnrDFs8GdLOHL0mtShWGOqsrG+xhljZjAd6jiISJJTTh5zR0nCrmbHyFXo01Ph:FnPnYar0kWW/GoVjov95yUJbJ1knuhh
TLSH T1B394F1603BFA074AE57B03780834E24047F2BD6AB911E75DACD1B1CD4A767929F21E63
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
291
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New Purchase Order #4522028497.exe
Verdict:
Malicious activity
Analysis date:
2022-01-13 05:07:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cca4effe-a515-4b04-b196-1901838b61d7

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/218906/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61dfb33de997359713e41b3c/reports/974b567f-92c8-44b4-a0c1-477f4ab122b4/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0a2e6e2a-5f82-486c-a598-7ae0cd17cb90
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/919802
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
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
Self deletion via cmd delete
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: Suspicius Add Task From User AppData Temp
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: 552280 Sample: New Purchase Order #4522028... Startdate: 13/01/2022 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 19 other signatures 2->50 10 New Purchase Order #4522028497.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\wrsRzorhd.exe, PE32 10->36 dropped 38 C:\Users\...\wrsRzorhd.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\Temp\tmpE01.tmp, XML 10->40 dropped 42 C:\...42ew Purchase Order #4522028497.exe.log, ASCII 10->42 dropped 52 Adds a directory exclusion to Windows Defender 10->52 54 Injects a PE file into a foreign processes 10->54 14 New Purchase Order #4522028497.exe 10->14         started        17 powershell.exe 22 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 svchost.exe 21->27         started        signatures10 56 Self deletion via cmd delete 27->56 58 Modifies the context of a thread in another process (thread injection) 27->58 60 Maps a DLL or memory area into another process 27->60 62 Tries to detect virtualization through RDTSC time measurements 27->62 30 cmd.exe 1 27->30         started        32 explorer.exe 1 152 27->32         started        process11 process12 34 conhost.exe 30->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-13 02:48:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
28 of 43 (65.12%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=opk52gghmqlljznssi4vw7ogwtesvbpmwtortofn2nrssuy6sjta._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:s6ap loader rat
Link:
https://tria.ge/reports/220113-fretzsfhc7/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Blocklisted process makes network request
Xloader Payload
Xloader
Unpacked files
SH256 hash:
3c1ba9de0677c2858a31b1c6fb76c62057fafea71b8a9c2ff590dc6b613042bc
MD5 hash:
1b366eb9312ece4f18476025575da330
SHA1 hash:
df395ed641c3c1af1e67ec8988c0784052cd40ac
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9c33fbbf-95dc-44da-a2dc-72f0e1055b21/
Parent samples :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 hash:
6d6255e43f8c15ac35d75832b1b8ac911010720326488ca424eee3e0566817c6
MD5 hash:
6fbeffefb041ca0248c2873f8f170127
SHA1 hash:
dc99780c9888bd4855c7fb8c75e95921ecd6a96a
Link:
https://www.unpac.me/results/9c33fbbf-95dc-44da-a2dc-72f0e1055b21/
SH256 hash:
30b34d8275a976fd6728006dad5f760ebb2f5eccb9fd6c439bc0b531167eddc0
MD5 hash:
ba09cf8b0cbc6826bfdfd76a0176933e
SHA1 hash:
4c9b652dee07ea1de0a1090d2b08f8cd38c333c2
Link:
https://www.unpac.me/results/9c33fbbf-95dc-44da-a2dc-72f0e1055b21/
SH256 hash:
73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266
MD5 hash:
2b5fb0e5ce50f49493e1962b67cb4088
SHA1 hash:
2236a938dbf0bcc3f6f26fcf06d08c3204d6c1f2
Link:
https://www.unpac.me/results/9c33fbbf-95dc-44da-a2dc-72f0e1055b21/
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/73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266

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
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 73d5dd18c76416b4e5b292395b7dc6b4c92a85ecb4dd19b8add36329531e9266

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/218906/

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