MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b38b57a54529989adfedab2ef64d18b480154a208cb23d455de6c06668061a0b. 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: 11
| SHA256 hash: | b38b57a54529989adfedab2ef64d18b480154a208cb23d455de6c06668061a0b |
|---|---|
| SHA3-384 hash: | b6cfaa14cd5733f2d69bcfd9146447d0e4093e12f1a3025a84c786338c2902353a94f68ae3df642837e00f4fcd7bcf00 |
| SHA1 hash: | edbb227deb1d93281cef758c08329bfc5aaa95a8 |
| MD5 hash: | f27262f812ddefcf2893f87f551ab341 |
| humanhash: | one-nuts-river-illinois |
| File name: | IAENMAIL-A4-230529-0830-0000570.pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 367'694 bytes |
| First seen: | 2023-09-11 12:58:29 UTC |
| Last seen: | 2023-09-11 13:38:46 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 6144:/Ya6D0S574idIXeJwXAfKyENSiwDImn0pVMTEYk8VIkMp5YXNo:/Yh06rdx+YKnN8se086vYK |
| Threatray | 11 similar samples on MalwareBazaar |
| TLSH | T15A7423526361C3FBD8B619F34C3E53AAE5FAD603006A93172BB057DEBC29201C51E7A4 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  malwarelabnet |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
307
Origin country :
CAVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IAENMAIL-A4-230529-0830-0000570.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-09-11 13:01:31 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Sending a custom TCP request
Launching a process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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, NSISDropper
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2023-09-11 09:13:27 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 36 (61.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 1 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
n/a
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
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
da466ac3eb719dc9198ad20c039cf1a783387e895238bbd41366b7807283c547
MD5 hash:
25eedda13e0dfb122a1772f1dc94ada2
SHA1 hash:
e9177e6451259dc21e7f52f48d8afadb8acecef4
SH256 hash:
b38b57a54529989adfedab2ef64d18b480154a208cb23d455de6c06668061a0b
MD5 hash:
f27262f812ddefcf2893f87f551ab341
SHA1 hash:
edbb227deb1d93281cef758c08329bfc5aaa95a8
Verdict:
Malicious
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: | DebuggerCheck__GlobalFlags |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Active |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | maldoc_getEIP_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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