MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13ec453c6271270eaea5be0958c7135ef449bd2ff1e74ad268fe76df32db5d72. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments

SHA256 hash: 13ec453c6271270eaea5be0958c7135ef449bd2ff1e74ad268fe76df32db5d72
SHA3-384 hash: 975a0a606aef0fa54928c055b8f558b2c6b07214dc373ce306d086e0293e205572103f2ebe559987c9ac8fee8c40a8a9
SHA1 hash: 27b416606206bc03980dbd83858d33fc188ca926
MD5 hash: c8e023a90c7e5e165f6b16317c822ce4
humanhash: romeo-jupiter-october-wolfram
File name:REQUEST FOR QUOTATION 1307-RFQ.pdf.exe
Download: download sample
Signature Formbook
File size:1'608'704 bytes
First seen:2021-04-30 12:52:15 UTC
Last seen:2021-04-30 14:21:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:NlhoLASPdqAuXO2leKx0CStSlyrOzIwK5V+Jiupak2E1D:NlWdXqlx0CStSoOzILV+JDHD
Threatray 4'836 similar samples on MalwareBazaar
TLSH 7F75C0AC726459E1E2371E7253CB4C0643692274A53BD61E8B9017FA0E63F171E3FA4B
Reporter cocaman
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
99
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Launching cmd.exe command interpreter
DNS request
Creating a window
Sending a UDP request
Unauthorized injection to a system process
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:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 401334 Sample: REQUEST FOR QUOTATION 1307-... Startdate: 30/04/2021 Architecture: WINDOWS Score: 100 32 www.partsus.xyz 2->32 34 www.organichighqualitytwig.com 2->34 36 2 other IPs or domains 2->36 46 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 8 other signatures 2->52 11 REQUEST FOR QUOTATION 1307-RFQ.pdf.exe 3 2->11         started        signatures3 process4 file5 30 REQUEST FOR QUOTAT...307-RFQ.pdf.exe.log, ASCII 11->30 dropped 66 Writes to foreign memory regions 11->66 68 Allocates memory in foreign processes 11->68 70 Injects a PE file into a foreign processes 11->70 15 RegSvcs.exe 11->15         started        signatures6 process7 signatures8 72 Modifies the context of a thread in another process (thread injection) 15->72 74 Maps a DLL or memory area into another process 15->74 76 Sample uses process hollowing technique 15->76 78 2 other signatures 15->78 18 explorer.exe 15->18 injected process9 dnsIp10 38 www.bfc8.xyz 43.224.155.141, 80 WEST263GO-HKWest263InternationalLimitedHK Singapore 18->38 40 carrot.com 35.162.110.35, 49731, 80 AMAZON-02US United States 18->40 42 10 other IPs or domains 18->42 54 System process connects to network (likely due to code injection or exploit) 18->54 56 Performs DNS queries to domains with low reputation 18->56 22 cscript.exe 12 18->22         started        signatures11 process12 dnsIp13 44 www.bfc8.xyz 22->44 58 Performs DNS queries to domains with low reputation 22->58 60 Modifies the context of a thread in another process (thread injection) 22->60 62 Maps a DLL or memory area into another process 22->62 64 Tries to detect virtualization through RDTSC time measurements 22->64 26 cmd.exe 1 22->26         started        signatures14 process15 process16 28 conhost.exe 26->28         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-04-30 09:14:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
27 of 47 (57.45%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader loader rat
Behaviour
Enumerates system info in registry
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
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.huamxvcyq.icu/aepn/
Unpacked files
SH256 hash:
ab27e65aeea963f64c905ff2de090a34225e1432bffe86b7341a2d834e69927e
MD5 hash:
9ca213138b0773ba7a519b8b519e1179
SHA1 hash:
e6c39e016ebeaf5baccb0c67d6b3c09fc18e4e7d
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
74b2935b9dfe4ba397fd0507ae3c36abb77193041f2e7c43c55dc4e7b33de61c
MD5 hash:
b5c218f30fecc9cb8513ff6a46737b01
SHA1 hash:
f0416867c2b114789620b318051f1fa390b07eae
SH256 hash:
7df77f85c683dd845c3631bfa6f65edbdc4543e9b1e5f3b55c8d47819332de67
MD5 hash:
2e796b4fb980a16d3c43c3e246a819c6
SHA1 hash:
e6b827b016896c884a3ad4f508798f1119658e8a
SH256 hash:
13ec453c6271270eaea5be0958c7135ef449bd2ff1e74ad268fe76df32db5d72
MD5 hash:
c8e023a90c7e5e165f6b16317c822ce4
SHA1 hash:
27b416606206bc03980dbd83858d33fc188ca926
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information


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

Malspam

Formbook

Executable exe 13ec453c6271270eaea5be0958c7135ef449bd2ff1e74ad268fe76df32db5d72

(this sample)

Comments