MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e197309f79a43cdeccdc0b69344a36abc6c23fb8eef66063e4eb5cc443ee9d4d. 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


Maldoc score: 15


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: e197309f79a43cdeccdc0b69344a36abc6c23fb8eef66063e4eb5cc443ee9d4d
SHA3-384 hash: 69a9721df90d195a911ab0725bc1fa4e33f4d1e488c3faf307a6dde677d4c538b9ad010b5babbb3e1892d32adea8979b
SHA1 hash: fc82f997a6c16d0e4b43808506b40372dd22f844
MD5 hash: e872f25c7d39e0e3c5ec46a4f09ba32e
humanhash: undress-monkey-neptune-vegan
File name:P0. 556117090.doc
Download: download sample
Signature Formbook
File size:107'684 bytes
First seen:2021-06-25 06:14:06 UTC
Last seen:Never
File type:Word file doc
MIME type:application/vnd.openxmlformats-officedocument.wordprocessingml.document
ssdeep 3072:3LqQHoUNnZFeHru5Y6+C4lvrKKUfC7q7Q7X9gv13y3h:3uQpn7YTdCmofC7q7Q7XCv1Cx
TLSH E0B36A138D58DF93D0A887F47E034EAC7B07271DA98939EE15221ECFBE681525EC914E
Reporter lowmal3
Tags:doc FormBook

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 15
OLE dump

MalwareBazaar was able to identify 7 sections in this file using oledump:

Section IDSection sizeSection name
A1418 bytesPROJECT
A271 bytesPROJECTwm
A34510 bytesVBA/M5KLO_XyY
A41260 bytesVBA/ThisDocument
A53039 bytesVBA/_VBA_PROJECT
A6534 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecDocument_OpenRuns when the Word or Publisher document is opened
SuspiciousshellMay run an executable file or a system command
SuspiciousWSCript.shellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
P0. 556117090.doc
Verdict:
Malicious activity
Analysis date:
2021-06-25 06:16:37 UTC
Tags:
macros macros-on-open generated-doc maldoc-23

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malicious
File Type:
Word File with Macro
Document image
Document image
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
spre.troj.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
DLL side loading technique detected
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (process start blacklist hit)
Found malware configuration
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 submitted file
Obfuscated command line found
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: msiexec download and execute
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 440333 Sample: P0. 556117090.doc Startdate: 25/06/2021 Architecture: WINDOWS Score: 100 32 telecomservices.com.ec 2->32 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 14 other signatures 2->56 8 MSIDE1D.tmp 20 2->8         started        12 explorer.exe 2->12         started        15 WINWORD.EXE 303 30 2->15         started        signatures3 process4 dnsIp5 28 C:\Users\user\AppData\Local\...\System.dll, PE32 8->28 dropped 30 C:\Users\user\AppData\Local\Temp\nqprlrxt, DOS 8->30 dropped 58 Detected unpacking (changes PE section rights) 8->58 60 Maps a DLL or memory area into another process 8->60 62 DLL side loading technique detected 8->62 64 Tries to detect virtualization through RDTSC time measurements 8->64 17 MSIDE1D.tmp 8->17         started        34 filledbasket.com 184.168.131.241, 49169, 80 AS-26496-GO-DADDY-COM-LLCUS United States 12->34 36 www.xn--kipinpaja-z2a.com 12->36 38 4 other IPs or domains 12->38 66 System process connects to network (likely due to code injection or exploit) 12->66 20 colorcpl.exe 12->20         started        68 Obfuscated command line found 15->68 22 cmd.exe 15->22         started        file6 signatures7 process8 signatures9 40 Modifies the context of a thread in another process (thread injection) 17->40 42 Maps a DLL or memory area into another process 17->42 44 Sample uses process hollowing technique 17->44 46 Queues an APC in another process (thread injection) 17->46 48 Tries to detect virtualization through RDTSC time measurements 20->48 24 cmd.exe 20->24         started        26 msiexec.exe 22->26         started        process10
Threat name:
Script.Trojan.Wacatac
Status:
Malicious
First seen:
2021-06-24 14:35:48 UTC
AV detection:
11 of 46 (23.91%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook macro rat spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Enumerates connected drives
Loads dropped DLL
Use of msiexec (install) with remote resource
Blocklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.fbrblog.com/k1rc/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

Formbook

Word file doc e197309f79a43cdeccdc0b69344a36abc6c23fb8eef66063e4eb5cc443ee9d4d

(this sample)

  
Delivery method
Distributed via e-mail attachment

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