MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 df14a9b72f7d050a1f00630d191acca3399551238c53f8878bcfc4e7c0cd77e3. 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: 10
| SHA256 hash: | df14a9b72f7d050a1f00630d191acca3399551238c53f8878bcfc4e7c0cd77e3 |
|---|---|
| SHA3-384 hash: | 6aa6edec8e0d67b80da15ece5c9da866e05c05e75f347a47a5e9980523916084b0bc8b8ec99c15d57c63bddb8fc802b3 |
| SHA1 hash: | 6590d84b654c866bb7f2630a85e8473ebfa8d96b |
| MD5 hash: | 5b6c6a726f3698c9fadccad2f7067bbb |
| humanhash: | mexico-butter-low-zebra |
| File name: | PO.x00991882822.xlsm |
| Download: | download sample |
| Signature | Formbook |
| File size: | 2'793'513 bytes |
| First seen: | 2021-03-04 07:44:14 UTC |
| Last seen: | Never |
| File type: |  xlsm |
| MIME type: | application/octet-stream |
| ssdeep | 1536:enk9N4Tbk8tOFiIeEz3wBYxlx1M8SE45V2Z+0nIcjELcQB3:ekXyjOFow3mYYFrs+0n9S3 |
| TLSH | 70D54425F2573612C6D7997440E623F1A372597F18021B8A2FF7AB380C866FA37C5E49 |
| Reporter |  abuse_ch |
| Tags: | FormBook xlsm |
abuse_ch
Malspam distributing Formbook:HELO: bosmailout05.eigbox.net
Sending IP: 66.96.187.5
From: lin@weinzhou.com
Subject: Approved order
Attachment: PO.x00991882822.xlsm
Formbook payload URL:
http://5.206.227.81/private/slim.exe
Office OLE Information
This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.
OLE dump
MalwareBazaar was able to identify 26 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| A1 | 662 bytes | PROJECT |
| A2 | 173 bytes | PROJECTwm |
| A3 | 740 bytes | VBA/Module1 |
| A4 | 117759 bytes | VBA/Module2 |
| A5 | 991 bytes | VBA/Sheet1 |
| A6 | 991 bytes | VBA/Sheet2 |
| A7 | 991 bytes | VBA/Sheet3 |
| A8 | 991 bytes | VBA/Sheet4 |
| A9 | 999 bytes | VBA/ThisWorkbook |
| A10 | 4630 bytes | VBA/_VBA_PROJECT |
| A11 | 2283 bytes | VBA/__SRP_0 |
| A12 | 357 bytes | VBA/__SRP_1 |
| A13 | 280 bytes | VBA/__SRP_2 |
| A14 | 494 bytes | VBA/__SRP_3 |
| A15 | 638 bytes | VBA/dir |
| B1 | 76 bytes | CompObj |
| B2 | 1742 bytes | Ole10Native |
| C1 | 76 bytes | CompObj |
| C2 | 53650 bytes | Ole10Native |
| D1 | 102 bytes | CompObj |
| D2 | 62 bytes | Ole |
| D3 | 256 bytes | Equation Native |
Intelligence
File Origin
# of uploads :
1
# of downloads :
144
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO.x00991882822.xlsm
Verdict:
Malicious activity
Analysis date:
2021-03-04 07:47:38 UTC
Tags:
macros ole-embedded macros-on-open exploit CVE-2017-11882 loader trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
expl.evad.troj
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Document contains an embedded macro with GUI obfuscation
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with hexadecimal encoded strings
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Found malware configuration
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Microsoft Office Product Spawning Windows Shell
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:
Script-Macro.Trojan.Heuristic
Status:
Malicious
First seen:
2021-03-04 07:45:06 UTC
AV detection:
9 of 48 (18.75%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
NTFS ADS
Script User-Agent
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.proofnutriceuticals.com/private/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Eldorado
Score:
0.90
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: | Email_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Email in files like avemaria |
| Rule name: | IPPort_combo_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | Select_from_enumeration |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | SharedStrings |
|---|---|
| Author: | Katie Kleemola |
| Description: | Internal names found in LURK0/CCTV0 samples |
| Rule name: | UAC_bypass_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | UAC bypass in files like avemaria |
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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