MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a7c55c55988c689f4950eec33581a2095c1dd6785cad65aa4418e67ca2bf9ea8. 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: | a7c55c55988c689f4950eec33581a2095c1dd6785cad65aa4418e67ca2bf9ea8 |
|---|---|
| SHA3-384 hash: | f59309691fa503bed79301fec21a5895e07b6be7ae799d75ed3e188c26d3cd665099f90df9436e4f154e8edc45576a5a |
| SHA1 hash: | eee9e75fbf2e117b0c306606c8e76398318b0608 |
| MD5 hash: | 4443f8f73632d7bb9e797f1938e33203 |
| humanhash: | mexico-comet-speaker-victor |
| File name: | SecuriteInfo.com.Trojan.NSIS.Guloader.28924.32007 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 540'336 bytes |
| First seen: | 2023-07-27 08:33:01 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 076b06e6a65c9b7cca5a61be0cd82165 (51 x GuLoader, 4 x AgentTesla, 4 x Formbook) |
| ssdeep | 6144:l21JpU7T7JhRlSTp9S6gUkka++aNOGkJppbXP2KhS1dO9D3p/gCHLadQuY4k:g0xheTp9bgfkWakHpA4S1YCVBY |
| Threatray | 1'632 similar samples on MalwareBazaar |
| TLSH | T114B4F1133268876BC5DB5F7482EBC317B2B91E014797560B5B68BF2CA4B13943E0E98D |
| 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 | c0a0a0a0f4747438 (1 x Formbook) |
| Reporter |  SecuriteInfoCom |
| Tags: | exe FormBook signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2023-01-27T10:10:52Z |
| Valid to: | 2026-01-26T10:10:52Z |
| Serial number: | 7942fc78d954fc02ab11565a013013ed13468755 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 76707ac76b4522008fd5eb3b566440e555a11f487ea38482192f2ca34358e65d |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
295
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.NSIS.Guloader.28924.32007
Verdict:
Suspicious activity
Analysis date:
2023-07-27 08:36:01 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file
Searching for the window
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
control guloader lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
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.
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
72 / 100
Signature
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected GuLoader
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2023-07-27 06:21:49 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
17 of 37 (45.95%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 1'622 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Loads dropped DLL
Unpacked files
SH256 hash:
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce
MD5 hash:
4d3b19a81bd51f8ce44b93643a4e3a99
SHA1 hash:
35f8b00e85577b014080df98bd2c378351d9b3e9
SH256 hash:
a7c55c55988c689f4950eec33581a2095c1dd6785cad65aa4418e67ca2bf9ea8
MD5 hash:
4443f8f73632d7bb9e797f1938e33203
SHA1 hash:
eee9e75fbf2e117b0c306606c8e76398318b0608
Malware family:
GuLoader
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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