MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 44c3dc491f609f0bfe310768c24f6a9e8dc1980284aff9d1aa052f7b0e0f62c7. 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: 12
| SHA256 hash: | 44c3dc491f609f0bfe310768c24f6a9e8dc1980284aff9d1aa052f7b0e0f62c7 |
|---|---|
| SHA3-384 hash: | 8126fabcf91bd0a907f2931ba650def0adbe361f201d800f3315c3e4aea4e2f20b34c0a6363582cc08ea772e7a06131a |
| SHA1 hash: | faaea5ec3a5ddb606bc0fcee8a7d5b06f23eb5d6 |
| MD5 hash: | 62dc119d183f1e9af0b89d441e749e70 |
| humanhash: | wolfram-tango-stream-hotel |
| File name: | Contessa_upit_9022022,xlsx.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'507'840 bytes |
| First seen: | 2022-02-09 11:54:04 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 24576:zn1kzmVQIggpufQlNiIE77jAzAbQwbuqK7UOkjb:x2RIgg0oagwK5UOqb |
| Threatray | 13'027 similar samples on MalwareBazaar |
| TLSH | T1C865BE1436E65536E06A06F579ACD785077BAD026A7BDB2D1CB833D93EF33508E80362 |
| File icon (PE): |  |
| dhash icon | b464ecf0e0f0f4c4 (3 x AgentTesla, 2 x Formbook) |
| Reporter |  GovCERT_CH |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
200
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Searching for synchronization primitives
DNS request
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
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
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Behaviour
Behavior Graph:
n/a
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.FormBook
Status:
Malicious
First seen:
2022-02-09 10:36:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
34
AV detection:
20 of 28 (71.43%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 13'017 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:ch24 evasion rat spyware stealer suricata trojan
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
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 Windows directory
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Formbook Payload
Looks for VirtualBox Guest Additions in registry
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
d9bb4a2e1032a73ac9f7de6b9244ae797578c862b556cf823d2f51d03993749c
MD5 hash:
e529b8a0999d6154778ab52ccbe4abdc
SHA1 hash:
8ef0a610dfe0c6c059ec13e484a04fcf2beb2f40
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
a5119578a5a4b9370eabd41312bf4328b30249a4e8b2a51b88a67d96b43ac9d2
MD5 hash:
d6342dd39bf2131c0b56d05b9fcf6b34
SHA1 hash:
3e20ba68d3f4165d8f5128395a7bb7874e6fe138
SH256 hash:
1d33fe054ff5bb0fb28af3d90c3a4d26dc2666b536d0e625835632da2576d4dd
MD5 hash:
52fb31a21857919ca1c9df18a6762cff
SHA1 hash:
e636c299964b528d614d86e89aaf56d9c1657f06
SH256 hash:
1e3e1621846a9adfb3e13622aae95014e06a2752ccf415b17d8604243ba63228
MD5 hash:
4a1f6e70084dc658295efc868327d76a
SHA1 hash:
97b962b4f47bc6262716b92fbd13e1c34e8e4e21
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
SH256 hash:
44c3dc491f609f0bfe310768c24f6a9e8dc1980284aff9d1aa052f7b0e0f62c7
MD5 hash:
62dc119d183f1e9af0b89d441e749e70
SHA1 hash:
faaea5ec3a5ddb606bc0fcee8a7d5b06f23eb5d6
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | malware_Formbook_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| 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.
Malspam
Delivery method
Distributed via e-mail attachment
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