MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81. 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: b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81
SHA3-384 hash: 5c54854ef85d4dc1403f0786acd61c979c01812ce6476efeb6d6a82a0f5ac907c715579f804587f525d51d8b83a9fa50
SHA1 hash: 42f526e8bcae0f3e6404e9bed89431cd6b5c9fa4
MD5 hash: c3d9581dfe9bc99d5999828f4177b264
humanhash: queen-purple-pluto-march
File name:INVOICE xlsx.exe
Download: download sample
Signature Formbook
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File size:676'864 bytes
First seen:2022-07-07 04:24:37 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 12288:LE7qWjsZ5uEd2iNmG1ZmKXKR7RB3J/8Jl67X8IIh+xF007ssgHuh7gzcLdSR2Dlt:LE7/W5X1dmKXO5/oAXjIh+xF004sgOhK
TLSH T19AE412483F58A727E83D66F884824E32937F76364522D3599FC673EA2467342C817B87
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
249
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/285325/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62c6603b11764e36f81d62a3/reports/791c4f12-33dd-492f-b967-bf24327825b4/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3c02f530-0e4b-4188-b419-c619bc523eab
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1026084
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in 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 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 658575 Sample: INVOICE xlsx.exe Startdate: 07/07/2022 Architecture: WINDOWS Score: 100 33 www.holistic.photos 2->33 35 holistic.photos 2->35 37 www.lauraheagy.com 2->37 45 Snort IDS alert for network traffic 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 9 other signatures 2->51 11 INVOICE xlsx.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\...\INVOICE xlsx.exe.log, ASCII 11->31 dropped 61 Injects a PE file into a foreign processes 11->61 15 INVOICE xlsx.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 39 www.explorebantentravel.com 103.224.182.242, 49841, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 18->39 41 holistic.photos 15.197.142.173, 49809, 80 TANDEMUS United States 18->41 43 7 other IPs or domains 18->43 53 System process connects to network (likely due to code injection or exploit) 18->53 22 svchost.exe 18->22         started        25 autofmt.exe 18->25         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81/
Threat name:
ByteCode-MSIL.Trojan.Leonem
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Status:
Malicious
First seen:
2022-07-07 03:28:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcdxogbp7papfc3isavab4fyuuny33so6aieoifjzkjoddmsbwaq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:t20a loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220707-e1yg1sfbg7/
Behaviour
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
d3900fa93ce8661cb25788fdc1f93be63f39334df2cb4636a3b74cf827f5cb62
MD5 hash:
ad08b9984f9538c6d42114e36289e4eb
SHA1 hash:
df757d5c1219505febed9d798adb69b63a4b7bef
Detections:
win_formbook_g0
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win_formbook_auto
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XLoader
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Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
SH256 hash:
43d4bb8e7db2f8587d4390ecb8b654aa08fdd1aceda06363d30a5bb72f1e5292
MD5 hash:
1de7369718a0611bf150887de2dd2721
SHA1 hash:
bc4f588df6c46f7c2e40bf32bad42882cdc053d9
Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
SH256 hash:
3b59fe180dd50e3f3d4fdcbdd4e7a2d4e3e1c85ae43cb4f3716c4be41e9ec2ae
MD5 hash:
9ea556e333e216a65aa09c102f36004f
SHA1 hash:
814c07f1dc68bd61840384aac3aa8346d9f8148f
Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
SH256 hash:
e21b289ab7a700d7ddf2db137564ae15f32f75b46d351f8be99fa4c6fa47ccc3
MD5 hash:
ffb0c5c77df565d795f0dc94382b9f2f
SHA1 hash:
19808a98dbc4fb5990619515c68dd24861bb8cac
Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
SH256 hash:
b4ddd7e7ce5d08fcd6c822ef60d81b3a16cc410e1b7812c224b8ae3630f5edfe
MD5 hash:
31970f72b2154d17194dfd53841830d2
SHA1 hash:
0f179fdf1db2826e87152cc7ad3c0f237b51c47a
Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
SH256 hash:
b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81
MD5 hash:
c3d9581dfe9bc99d5999828f4177b264
SHA1 hash:
42f526e8bcae0f3e6404e9bed89431cd6b5c9fa4
Link:
https://www.unpac.me/results/70f1b1d3-9084-4b4d-b23d-b59bb14955d2/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b88777182ffb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81

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 b88777182ffbc0f28b68902a00f0b8a51b8dee4ef0104720a9ca92e18d920d81

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/285325/

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