MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: 89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af
SHA3-384 hash: 1c52cbec2830bc440f442d2c7b66feb2676fd0d0432d00ce5e6f3e4b42992f6bde30f0c5cc26c9ed55822003012edfdf
SHA1 hash: 50d17bb2dd02c0f53676ff051cf463b07cc1be91
MD5 hash: 5714f2783f8f9ee0f728070a72300534
humanhash: april-montana-thirteen-massachusetts
File name:INVOICE.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:989'696 bytes
First seen:2022-05-16 01:27:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:7jI2PNKAC+6OKpLeoP0MAfkxsBwoyGKnzRLslKAC+6OKpLeoP0MAfkxsBwoyGKnm:7jIqKAC+6OKpLeoP0MAfkxsBwoyGKnz+
TLSH T1E925AF61A1C5DA59DF2672F2EE5E8C3223A3ADC50051C6AAD17A33B68572357DC03B0F
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 4d5d5b5f4f474d94 (3 x AgentTesla, 2 x Formbook, 2 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/270863/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe greyware obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/6281a8a36c85fb2496997e95/reports/0c74e94f-7c15-42c1-9aff-17e154681648/overview
Result
Verdict:
UNKNOWN
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/dbfedb9a-d6f6-4e41-8267-0bc701736f25
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/994516
Signature
Adds a directory exclusion to Windows Defender
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)
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
Self deletion via cmd delete
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 netstat to query active network connections and open ports
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 dnsIp2 2 Behavior Graph ID: 627008 Sample: INVOICE.exe Startdate: 16/05/2022 Architecture: WINDOWS Score: 100 43 www.shindongact.com 2->43 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for dropped file 2->53 55 7 other signatures 2->55 11 INVOICE.exe 7 2->11         started        signatures3 process4 file5 37 C:\Users\user\AppData\...\tWUrVQfCoIDPU.exe, PE32 11->37 dropped 39 C:\Users\user\AppData\Local\...\tmp57C5.tmp, XML 11->39 dropped 41 C:\Users\user\AppData\...\INVOICE.exe.log, ASCII 11->41 dropped 61 Uses schtasks.exe or at.exe to add and modify task schedules 11->61 63 Adds a directory exclusion to Windows Defender 11->63 65 Tries to detect virtualization through RDTSC time measurements 11->65 67 Injects a PE file into a foreign processes 11->67 15 INVOICE.exe 11->15         started        18 powershell.exe 24 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 77 Modifies the context of a thread in another process (thread injection) 15->77 79 Maps a DLL or memory area into another process 15->79 81 Sample uses process hollowing technique 15->81 83 Queues an APC in another process (thread injection) 15->83 22 explorer.exe 15->22 injected 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process9 dnsIp10 45 shops.myshopify.com 23.227.38.74, 49808, 80 CLOUDFLARENETUS Canada 22->45 47 www.aprlegocrushipp.sbs 22->47 57 System process connects to network (likely due to code injection or exploit) 22->57 59 Uses netstat to query active network connections and open ports 22->59 30 NETSTAT.EXE 22->30         started        signatures11 process12 signatures13 69 Self deletion via cmd delete 30->69 71 Modifies the context of a thread in another process (thread injection) 30->71 73 Maps a DLL or memory area into another process 30->73 75 Tries to detect virtualization through RDTSC time measurements 30->75 33 cmd.exe 1 30->33         started        process14 process15 35 conhost.exe 33->35         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af/
Threat name:
ByteCode-MSIL.Trojan.RemLoader
Create hunting rule
Status:
Malicious
First seen:
2022-05-15 23:44:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rgu3o4tb5vjt3phafdpacta6nm277ltedhjmtxasc6f7yspx4wxq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m29n rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220516-bvnh3sbdcl/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Modifies registry class
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
Checks computer location settings
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
59f2a7573752d88a8d0faac6facac38742bc121eba43ebe34a726af58ec66148
MD5 hash:
36a06fbe436db1b1ee3d2de4935e65fc
SHA1 hash:
3258d29b34769de16a13216d7be0a5849c6736e9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ebac34f0-c289-430f-b986-0b70b3a267af/
Parent samples :
58d325351b79f84d68ef5586de43ec3708fc0e142a83007fddbd7a05c20021ce
89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af
SH256 hash:
709fdbef8932044e42231f14888aa12b12ddc571e6daba8af86d624a39fa63bf
MD5 hash:
a7a6647650fe0204d1ab042824d638be
SHA1 hash:
a1194aba19ab6190a412073fe1918cd1b559aacf
Link:
https://www.unpac.me/results/ebac34f0-c289-430f-b986-0b70b3a267af/
SH256 hash:
43c225cf6d717f6969d565b0f9640c6d5d5d98e136527d310f79db4b744d4161
MD5 hash:
851f1fc2b72bc58f1a5a7a1fa4b4c323
SHA1 hash:
30ea57270e1bedf818f395b43a69670bd890bad4
Link:
https://www.unpac.me/results/ebac34f0-c289-430f-b986-0b70b3a267af/
SH256 hash:
767b7f33a752b80c21ca77251fd585b2bf1ff0745929cbeaf8bcea5f39f15002
MD5 hash:
4205892407953957ab1caedd72123d76
SHA1 hash:
15343f2de5473461f4682ddcea3b6a81d4d97ec8
Link:
https://www.unpac.me/results/ebac34f0-c289-430f-b986-0b70b3a267af/
SH256 hash:
89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af
MD5 hash:
5714f2783f8f9ee0f728070a72300534
SHA1 hash:
50d17bb2dd02c0f53676ff051cf463b07cc1be91
Link:
https://www.unpac.me/results/ebac34f0-c289-430f-b986-0b70b3a267af/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/89a9b77261ed/report/overview.html
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/89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af

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 89a9b77261ed533dbce028de014c1e6b35ffae6419d2c9dc12178bfc49f7e5af

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/270863/

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