MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a91bbd192372022716e21ceaea5723a6782da37bd1fc1d182693fa8a9d574a15. 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: 8
| SHA256 hash: | a91bbd192372022716e21ceaea5723a6782da37bd1fc1d182693fa8a9d574a15 |
|---|---|
| SHA3-384 hash: | 23a42a2afc12719490ea626e3b99ece19b1dd754a4d1760a0e6ba033f611cae445cd408aba150821ac8b470b1bd6d703 |
| SHA1 hash: | e93aa188e73b65a33c8f6f9495ee8c0a29031bc7 |
| MD5 hash: | 702ed7ee52bdc775663ddfaf5a2708a0 |
| humanhash: | illinois-edward-orange-friend |
| File name: | Company profile_ 001.xll |
| Download: | download sample |
| Signature | Formbook |
| File size: | 873'984 bytes |
| First seen: | 2022-10-24 12:26:34 UTC |
| Last seen: | Never |
| File type: |  xll |
| MIME type: | application/x-dosexec |
| imphash | be710ba34b048ab0098050ccf62e369c (18 x Formbook, 14 x Dridex, 9 x AgentTesla) |
| ssdeep | 12288:2x2s7IMrR4yVld8bzbBSrewjWDWI7yslPm8yKO+nNgdaiPSjMqZGDx3:2x7PkX1uuOslPm8yL5daiqjMFx |
| Threatray | 91 similar samples on MalwareBazaar |
| TLSH | T1C105AF55BECA6EA2EF7F46B78361DA2D1126736D03A0A6CF7603059D3951FC2443EA03 |
| TrID | 58.0% (.CPL) Windows Control Panel Item (generic) (197083/11/60) 34.3% (.OCX) Windows ActiveX control (116521/4/18) 3.0% (.EXE) Win64 Executable (generic) (10523/12/4) 1.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 1.3% (.EXE) Win32 Executable (generic) (4505/5/1) |
| Reporter |  abuse_ch |
| Tags: | FormBook xll |
Intelligence
File Origin
# of uploads :
1
# of downloads :
144
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Company profile_ 001.xll
Verdict:
No threats detected
Analysis date:
2022-10-24 12:34:25 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Result
Verdict:
Malicious
File Type:
Office Add-Ins - Suspicious
Behaviour
BlacklistAPI detected
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Machine Learning detection for dropped file
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 submitted file
Office process drops PE 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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2022-10-24 14:04:20 UTC
File Type:
PE (Dll)
Extracted files:
2
AV detection:
10 of 26 (38.46%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
unknown
Similar samples:
+ 81 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:oi57 rat spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
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: | Find_Any_Xll_Files |
|---|---|
| Author: | David Ledbetter @Ledtech3 |
| Description: | Find Any XLL File |
| Rule name: | Hunt_Excel_DNA_Built_XLL_Files |
|---|---|
| Author: | David Ledbetter @Ledtech3 |
| Description: | Hunt for Excel Addin dll files generated with Excel-DNA builder https://excel-dna.net/ |
| Rule name: | pdb_YARAify |
|---|---|
| Author: | @wowabiy314 |
| Description: | PDB |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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