MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4
SHA3-384 hash: 06abdd4112d66acdbed05b0fd50f610743fda58c75faa608d9621f217d39cb1204d0e1da013c03d18650cc168b9875d2
SHA1 hash: 8edccec93f1f626b72794d41308dc019d79c361b
MD5 hash: 0e3d9093a78c09e35a878781b8324dce
humanhash: nevada-hot-ten-louisiana
File name:hbuIgEcnzT30Uma.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:847'872 bytes
First seen:2022-12-06 15:56:02 UTC
Last seen:2022-12-12 13:18:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:JYCcinkg586aWHffUlllYUJ1Q0ydOML09Vjc4eEWBd9njk/:WCZnB5O8fUlQoyVWWVJ+
TLSH T1BD052A4CF3089E36FDA983FD369140CE629E148D7470F7D08A89A4FD7234A9E1AEB515
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
hbuIgEcnzT30Uma.exe
Verdict:
Malicious activity
Analysis date:
2022-12-06 15:56:25 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/c4c869ad-e240-479e-a624-dc1029514b6f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/343527/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.389.14845.27908.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Launching a process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/638f66189a505ad9423da966/reports/812f1f1b-940c-4b4a-811c-fc83285d9e02/overview
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c92bccbc-4cfe-4395-a022-6c5db8668f15
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1129074
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Deletes itself after installation
Machine Learning detection for sample
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-12-05 03:57:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
28 of 40 (70.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uq4syo7gxizx6nymbmqxbp2gy3df6acugbhtkxkawc3777whddsa._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bmr1 rat spyware stealer trojan
Link:
https://tria.ge/reports/221206-tdcdlafa4s/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Formbook
Unpacked files
SH256 hash:
ef16217780a46e8897e25a9c6118c3dd7d1b02cd14854bd34813f6fc6bcd51f3
MD5 hash:
87b6eff2a6e458d5286ffd81224c908b
SHA1 hash:
3ad8fbfab912ebc43a68fb776d3ddd247bd78a71
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
Parent samples :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 hash:
8192266c229eac4675ff1fb94a0311d69f49a30ea8581fdf3066761c579fbc26
MD5 hash:
4e8cb27da9e9cd3c2600117a53055218
SHA1 hash:
b245bd33081e0605be93290302a6e4f3433d1e7d
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
SH256 hash:
3624268b1bf67fd3f560f345e5171f3a2f8968a776c23816ea76fc0ef41b0f03
MD5 hash:
1619753b625e58c25b73fbf1f0bff482
SHA1 hash:
c0d7922bdbc10ef0ee1606a40c2dedd22cb180d4
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
SH256 hash:
76c442a3046b40398efbc1404d1cf2905f080785f3e473a6856b03a4c6f6d721
MD5 hash:
c111df3193a72990d47d5c2e57e9aace
SHA1 hash:
6af704fb86c1fd01c5aeec16488066108a6c6aad
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
SH256 hash:
739634c80be50ccf9c26d47c1a1420cf1de69e2edf558936792f967b8cd818cd
MD5 hash:
970c6c15b8e2f2b58f61a53b51315cb6
SHA1 hash:
3b1aca749af2f4b9f7c8972017bfaa1393e869f4
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
SH256 hash:
340ba2312d5cdfc3d89f3f35f627187dcb406e5afea134bc76b04f52f4285df3
MD5 hash:
85f9290aa8900e9fd74b01ee23125706
SHA1 hash:
310eb5e4aea5471b74a6385f1da283b9d8e3d698
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
SH256 hash:
a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4
MD5 hash:
0e3d9093a78c09e35a878781b8324dce
SHA1 hash:
8edccec93f1f626b72794d41308dc019d79c361b
Link:
https://www.unpac.me/results/957972fd-0f40-4134-a937-e74d7dc9625a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4

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_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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

Formbook

rar b99c6dd08a800da47830abd24e453acd29522766c435762d4ddab6cc4edf4813

Formbook

Executable exe a4392c3be6ba337f370c0b2170bf46c6c65f0054304f355d40b0b7fffec718e4

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/343527/
  
Dropped by
SHA256 b99c6dd08a800da47830abd24e453acd29522766c435762d4ddab6cc4edf4813
  
Dropped by
MD5 53c36efda9ef10654106b5ea1ce5daec

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