MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289. 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 3 File information Comments

SHA256 hash:	137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289
SHA3-384 hash:	86891af7fb2838f242a137ee3a433d9fd0178a5df852dcd632f98b5183204fc48a93c65499423c6296850f3106a5a83f
SHA1 hash:	a04f86b9a7a634b0af8701cd12ce92cb14a70738
MD5 hash:	a596ebd2dbfeaf87999c3893b73eebd5
humanhash:	saturn-london-moon-delaware
File name:	Dhl Delivery Document.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	750'080 bytes
First seen:	2024-07-04 15:36:13 UTC
Last seen:	2024-07-04 16:19:46 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	fc6683d30d9f25244a50fd5357825e79 (92 x Formbook, 52 x AgentTesla, 23 x SnakeKeylogger)
ssdeep	12288:SYV6MorX7qzuC3QHO9FQVHPF51jgcKAPKK9XUhk5JWsGS3PVxU7kg:hBXu9HGaVHKASRylGS3PE7kg
Threatray	77 similar samples on MalwareBazaar
TLSH	T1C2F423967B5E953BC4944BB0847B62387036BC60CA456BCAB0857F3BF973EC978011A7
TrID	31.3% (.EXE) UPX compressed Win32 Executable (27066/9/6) 30.7% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 12.1% (.EXE) Win64 Executable (generic) (10523/12/4) 7.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 5.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):
dhash icon	5232d212f0cc8626 (20 x AgentTesla, 1 x Formbook, 1 x MassLogger)
Reporter	malwarology
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

367

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

a596ebd2dbfeaf87999c3893b73eebd5.exe

Verdict:

No threats detected

Analysis date:

2024-07-04 07:24:59 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/5864f42a-4ccb-4385-902a-9e34d2431640

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.Trojan.AutoIt.1410.15687.30277.UNOFFICIAL

Verdict:

Malicious

Score:

94.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6686c2091005591c3c2e9554win10vpnfull_triage

Tags:

Shellcodecrypter

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Unauthorized injection to a system process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

AutoIt lolbin masquerade microsoft_visual_cc packed packed shell32 upx

Link:

https://www.filescan.io/uploads/6686c19fce78046c1aae946d/reports/e589bb42-c6ca-4b20-92ec-d4ee60ff1006/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289

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

Link:

https://analyze.intezer.com/analyses/3ee87f0c-941c-4dc0-b987-50493cfb4c1c

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/1467756

Signature

AI detected suspicious sample

Binary is likely a compiled AutoIt script file

Initial sample is a PE file and has a suspicious name

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

Switches to a custom stack to bypass stack traces

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289/

Threat name:

Win32.Trojan.Strab

Status:

Malicious

First seen:

2024-07-04 10:23:49 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 37 (56.76%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=cn6mjymmyujndrbqwn3aw5dhkueavfc3aokjoxq7ceayghvyskeq._file

Verdict:

malicious

Label(s):

formbook

Formbook

927e8668d7e5b22d0d278cb66ecbb15a51420f2fc5299aaa324d43a7d04719a2

Formbook

a566d5f1d8c962fba2c10102275118dba15251f6790d88839b3a60bfd533fcb0

Formbook

acc92a65ca022b4655bab496f447640dfe74055e9fbfcdf63e3e681ddf6b3bb8

Formbook

b5e250a95073b5dfe33f66c13cc89da0fc8d3af226e5efb06bb8fcfd9a4cd6ec

Formbook

d0b94b855d2f24add1edf6b3a6ecae24e4366f181a1ccd0bcd3b27e94de95bc0

Formbook

e5f5e88e8becfe092d10a927f72f580fd3a98612989a69a1f6df309f32b169f6

Formbook

f310dd81d3c2274dc41b3799af4957d9c84cd614a0917d80f197e84a2bd8753d

Formbook

+ 67 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

7/10

Tags:

upx

Link:

https://tria.ge/reports/240704-s2f61s1bkb/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Program crash

AutoIT Executable

Suspicious use of SetThreadContext

UPX packed file

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/a46bc2df-b34e-4c90-8c9e-644a83f52d0e

Unpacked files

SH256 hash:

f4ddb3ea2960cc4182f0ae13e6a1728b16c484721efb856e9f6d19576d0782ee

MD5 hash:

3fc9073327e0726a9ec199a92ad2d4bf

SHA1 hash:

1f32e426adb6385b285a618084be6f12674e31af

Detections:

win_formbook_g0

win_formbook_w0

Link:

https://www.unpac.me/results/c07fa382-2fd9-475f-8d0e-30b273070ab5/

SH256 hash:

f1436b66a7c37efbc7b211ca451c9cb9fbd839010dd52575c5d81a4193898f85

MD5 hash:

427cebc9716a1e67f5525f1b346ec655

SHA1 hash:

5baeaff71e1f74035b26abc33d449de0f1eec411

Link:

https://www.unpac.me/results/c07fa382-2fd9-475f-8d0e-30b273070ab5/

SH256 hash:

fa50a65986bc1e9b37b059d5acc30de42590b69a6b65921c29765079806a1dee

MD5 hash:

85fca557eed33305ca63075db3ed7726

SHA1 hash:

9dc03eb9dfe417a6240b798bc0aba2a761640e4f

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/c07fa382-2fd9-475f-8d0e-30b273070ab5/

SH256 hash:

137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289

MD5 hash:

a596ebd2dbfeaf87999c3893b73eebd5

SHA1 hash:

a04f86b9a7a634b0af8701cd12ce92cb14a70738

Detections:

SUSP_Imphash_Mar23_3

Link:

https://www.unpac.me/results/c07fa382-2fd9-475f-8d0e-30b273070ab5/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289

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:	SUSP_Imphash_Mar23_3 Create hunting rule
Author:	Arnim Rupp (https://github.com/ruppde)
Description:	Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:	Internal Research

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	upx_largefile Create hunting rule
Author:	k3nr9

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

zip a4cb74b1a586d8ba87bce47b6fa775056586970f3dbe39ddd1e06a1968563a6d

Formbook

exe 137cc4e18cc512d1c430b3760b746755080a945b0394975e1f1101831eb89289

(this sample)

91b57e4a229a929ffef77e2cf564dea624bbc50fd54372d48d8ec812753c976f

Link

https://www.unpac.me/results/9e9b9db1-45fa-4592-ac9b-f38ebf2d46c1

Dropped by

SHA256 a4cb74b1a586d8ba87bce47b6fa775056586970f3dbe39ddd1e06a1968563a6d

Dropping

SHA256 91b57e4a229a929ffef77e2cf564dea624bbc50fd54372d48d8ec812753c976f

Delivery method

Distributed via e-mail attachment

Dropped by

MD5 0401ba1b0e79a95e50ae03a892a3632d

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::GetAce
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::timeGetTime
WIN_BASE_API	Uses Win Base API	KERNEL32.DLL::LoadLibraryA
WIN_NETWORK_API	Supports Windows Networking	MPR.dll::WNetUseConnectionW

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