MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 85357994a91c91c084eee5b52997631a7fd879f5fd0523bb2b01c9e1c7beb531. 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
| SHA256 hash: | 85357994a91c91c084eee5b52997631a7fd879f5fd0523bb2b01c9e1c7beb531 |
|---|---|
| SHA3-384 hash: | c798648e95ece0bb441430967cc7ab95a23463c9db2e71e7bb031acfa584b61878eea25262203a37a31b7be8d40b202b |
| SHA1 hash: | fd8cdd1cc8eee69d018b9c4610b82ae33cc7f0e1 |
| MD5 hash: | 9a7e57e332a2f5ae2b0fabb271d482ac |
| humanhash: | river-yellow-football-zulu |
| File name: | Documents.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 769'024 bytes |
| First seen: | 2021-07-05 22:14:51 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:W1I81Ks1EOGQy8VeG/4GN7xvuFfuKrlWEQbUHtv32DcY3l0RepHs3sI:dczVeK4qQFdrkEb00RkM |
| Threatray | 6'168 similar samples on MalwareBazaar |
| TLSH | 9BF48D303AD89176E0BA4F7785A7B48153BFFA176F17D85D284513C90B13A03CA72B6A |
| Reporter | Anonymous |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Documents.exe
Verdict:
Malicious activity
Analysis date:
2021-07-05 22:18:55 UTC
Tags:
trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
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.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
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
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)
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
Queries sensitive video device information (via WMI, Win32_VideoController, 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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-07-05 21:47:47 UTC
AV detection:
15 of 46 (32.61%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 6'158 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook evasion rat spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Deletes itself
Looks for VMWare Tools registry key
Formbook Payload
Looks for VirtualBox Guest Additions in registry
Formbook
Malware Config
C2 Extraction:
http://www.emeraldisle-msp.com/wrcb/
Unpacked files
SH256 hash:
a0287d8f751a975bb5083943fc7502b40ca6c0263a627f1cee14fa6c69fc97c3
MD5 hash:
3bd27b9aab5bb2eb5c12774846baaf71
SHA1 hash:
e4cb3477a848a6e6f674ea24f383274cb25025c5
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
1c5e0a0d909d1da24af87967a1e154c8aa490a1f99c6624e7214d20eb84f4fec
MD5 hash:
81faf15c7e3c9446d906659f7c7a9f16
SHA1 hash:
d7e05a22b109ce608109dc509029a7fe22b4b8bf
SH256 hash:
4cc4269d3d134f9dedb15d9f881514ac45abd6945f87bb2f778af22195e3701d
MD5 hash:
66e0a88b790487f600a862168b44fbc4
SHA1 hash:
8629d8ed32bb10bcbc87c0541d3fef884cf428cb
SH256 hash:
85357994a91c91c084eee5b52997631a7fd879f5fd0523bb2b01c9e1c7beb531
MD5 hash:
9a7e57e332a2f5ae2b0fabb271d482ac
SHA1 hash:
fd8cdd1cc8eee69d018b9c4610b82ae33cc7f0e1
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Delivery method
Distributed via e-mail link
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