MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
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SHA256 hash: cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5
SHA3-384 hash: 90c5f3e1204dd6c47602fcd128fa9ee6c1afc5e4f9e181929c0ce090f05fb95fe9b256bf743ee65f91d33288a228f38e
SHA1 hash: d88ef042f9b811aefdbc9bb2a11d7ce7a0de8efb
MD5 hash: 239bc8480ad07cc85f15ed628a3beb9e
humanhash: nebraska-avocado-east-chicken
File name:shipping documents.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:18'944 bytes
First seen:2022-07-19 00:21:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 384:2gCw6H5O/lf/SBJjLLmSIISSSSSISSSpvKACPOE:2gClOIAVCGE
Threatray 1'907 similar samples on MalwareBazaar
TLSH T1FD82E8CB52F38D23FAA1C33D482A25464F75E96CB8A6B65B34C551CE3827B408BCC715
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)
File icon (PE):PE icon
dhash icon 0096cc714d86aa00 (18 x RemcosRAT, 14 x Formbook, 7 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
311
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/291734/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.22107.24485.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62d5f9ae8fbcdde3605ba0bd/reports/7ee876af-5aa7-46b3-a7de-7c657cb7fea4/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/0360f93d-e545-4ff4-a1be-946a26cd73f8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1036198
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Executable has a suspicious name (potential lure to open the executable)
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 domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 668692 Sample: shipping documents.exe Startdate: 19/07/2022 Architecture: WINDOWS Score: 100 64 Multi AV Scanner detection for domain / URL 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus detection for URL or domain 2->68 70 12 other signatures 2->70 10 shipping documents.exe 16 7 2->10         started        process3 dnsIp4 56 91.92.120.11, 49743, 49758, 49759 INETLTDTR Cyprus 10->56 50 C:\Users\user\AppData\Roaming\...\Knlgmhf.exe, PE32 10->50 dropped 52 C:\Users\user\...\Knlgmhf.exe:Zone.Identifier, ASCII 10->52 dropped 54 C:\Users\user\...\shipping documents.exe.log, ASCII 10->54 dropped 84 Encrypted powershell cmdline option found 10->84 86 Writes to foreign memory regions 10->86 88 Injects a PE file into a foreign processes 10->88 15 InstallUtil.exe 10->15         started        18 powershell.exe 18 10->18         started        file5 signatures6 process7 signatures8 90 Modifies the context of a thread in another process (thread injection) 15->90 92 Maps a DLL or memory area into another process 15->92 94 Sample uses process hollowing technique 15->94 96 2 other signatures 15->96 20 explorer.exe 3 15->20 injected 22 conhost.exe 18->22         started        process9 process10 24 Knlgmhf.exe 14 4 20->24         started        27 Knlgmhf.exe 3 20->27         started        29 cmd.exe 20->29         started        31 2 other processes 20->31 signatures11 72 Machine Learning detection for dropped file 24->72 74 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 24->74 76 Encrypted powershell cmdline option found 24->76 33 InstallUtil.exe 24->33         started        36 powershell.exe 24->36         started        78 Writes to foreign memory regions 27->78 80 Injects a PE file into a foreign processes 27->80 38 InstallUtil.exe 27->38         started        40 powershell.exe 27->40         started        82 Tries to detect virtualization through RDTSC time measurements 29->82 42 cmd.exe 29->42         started        process12 signatures13 58 Modifies the context of a thread in another process (thread injection) 33->58 60 Maps a DLL or memory area into another process 33->60 62 Sample uses process hollowing technique 33->62 44 conhost.exe 36->44         started        46 conhost.exe 40->46         started        48 conhost.exe 42->48         started        process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-07-19 00:22:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zwajnqxcunjzyzrkw2gkljagpzmoau6tix27aqash35q56pnl22q._file
Verdict:
malicious
Similar samples:
0d0be8ecc5e7c7d3fb48665b5860aa8eb97d367f58af0de01e8bcff3861f4c52
Formbook
61126f74e12b1f13c1f000a90bbcb919979d5d53ac8b20114077986a2fb01495
Formbook
699d61469fd170d6cca80f781a3ab9b0041d75095ff8c59aa6afccf52b3e0278
Formbook
9c069b3043b757ab5e67889b9f2820758ddb92823bf91678182d6386a16fd5ea
Formbook
a0cfdb287a571e7585132886bc8a0ad8de4427eb4b2bad5e650d5921e4834e9e
Formbook
af21146a2dde58a679dc4186bdc6d4827caeb7150851da43aec36f4a662b4d01
Formbook
af6b1e2eb748f48a5e7b6a68301b0616a8a4e79845e17df2c9712caec453359a
Formbook
b1fa69e98d91d174851b755a68c214073833e5ac20fdd64f45a61ff0c4a47ad8
Formbook
ce442fab80f616645429e47bededf88f2104476899a35952f70e1e31a21e734a
Formbook
e1f0b80e829512170cf479a745a34334108357d4cda701e8be7c10190cb14618
Formbook
+ 1'897 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:gfv7 loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220719-anw17sddh9/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Reads user/profile data of web browsers
Blocklisted process makes network request
Xloader payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5
MD5 hash:
239bc8480ad07cc85f15ed628a3beb9e
SHA1 hash:
d88ef042f9b811aefdbc9bb2a11d7ce7a0de8efb
Link:
https://www.unpac.me/results/b8a36170-d75d-45f7-a100-fa00d66caf27/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cd8096c2e2a3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5

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
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 cd8096c2e2a3539c662ab68ca5a4067e58e053d345f5f040123efb0ef9ed5eb5

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/291734/

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