MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32
SHA3-384 hash: 2322eae2b2caabc50e87264b313617c8856dad553493ab5b86a3d2545771054fcc551866f6b8213aef632d37b99b6386
SHA1 hash: 597eba336f4593f9f8a53e7b4704990ab24f193f
MD5 hash: b4e4989e91c06b80c46a6c05a6098f13
humanhash: alanine-december-may-uranus
File name:Purchase Inquiry.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:218'893 bytes
First seen:2022-05-03 14:37:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (720 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 6144:HNeZmM5aXu1NS4iTnoy8vS/QaKe7yYS8g3emE70xvGHs:HNlkaXu69cvS/QCuSYU0xvGHs
Threatray 15'264 similar samples on MalwareBazaar
TLSH T17124125896A4C433D5A393315D359B6F8FFEFB1230AA830B17A08F5EF922181E61DB15
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
275
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Purchase Inquiry.exe
Verdict:
Malicious activity
Analysis date:
2022-05-03 14:57:45 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/35b6682f-1e8e-4dc0-a577-73bb9c55d6ba

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/268450/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.2.6896.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/16200/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/62713e6762b1ae4451d1d523/reports/4e319def-ec14-498b-9237-b5b6734218d7/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5eec0c09-1e58-4ecc-841e-12f0339d70bd
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/987197
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 619702 Sample: Purchase Inquiry.exe Startdate: 03/05/2022 Architecture: WINDOWS Score: 100 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 6 other signatures 2->53 11 Purchase Inquiry.exe 18 2->11         started        process3 file4 31 C:\Users\user\AppData\...\vskkutktid.exe, PE32 11->31 dropped 14 vskkutktid.exe 11->14         started        process5 signatures6 63 Multi AV Scanner detection for dropped file 14->63 65 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->65 67 Tries to detect virtualization through RDTSC time measurements 14->67 69 Injects a PE file into a foreign processes 14->69 17 vskkutktid.exe 14->17         started        process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Sample uses process hollowing technique 17->43 45 Queues an APC in another process (thread injection) 17->45 20 explorer.exe 17->20 injected process9 dnsIp10 33 www.aletter2u.com 104.140.110.199, 49801, 80 EONIX-COMMUNICATIONS-ASBLOCK-62904US United States 20->33 35 www.miagoconsulting.com 20->35 37 miagoconsulting.com 34.102.136.180, 49793, 80 GOOGLEUS United States 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 chkdsk.exe 20->24         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-04-27 13:25:49 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
29 of 42 (69.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yhp6sgrdry5xtcdwkpohc35b7zoupgnyvn4nnoi4avuigc3zliza._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0e3dc9a9c08c1dadb1cb920c7d32b7f9fee978460a15f8459a4cc12c98c6e7cd
Formbook
1c2f6b38af555e63c11d8dd6bebf23031802d079556720108ba51d5d87418fdc
Formbook
2537720d5a68fae9bd2bd01925102deb25af75b86fbdc295f166efc97e636cfe
Formbook
51ca9a86ecb638b2805cd27a752159a05d4a3317c11ea43fb0f0cca78601c8dc
Formbook
6ecfdff224175dade2cbf63719974b5335c1a81cf787142681163ddf882ce00e
Formbook
8c7c6966c40ca10cdb43c9520c24ae932e63429fbc858b2c05f94f1bedbe0efa
Formbook
995ed5a87efc98cfc45cd810d470bb7aa28a8e598da4a27516892bffdc99ac27
Formbook
aaa025e66e7edbf2120c46ca3f09420caf7a71ff6c52cd64ff69198b339778ed
Formbook
c6ccab15f09cd96dc361af96d7c1b3469d83aaede794309536131081ea6ab245
Formbook
+ 15'254 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:r31e rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220503-rzpvpsbhdm/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
861903f997faec1c4c00d052724b71e2fc9cf4f904f95abf73c94445070d6430
MD5 hash:
ea287bbd825aa9d7d43a3e49892b34d7
SHA1 hash:
b3494917dd0cf23a40d96c6dfb7b2ea7232b9b4a
Link:
https://www.unpac.me/results/d8ae8017-69a7-4733-bac4-982bfa24bb65/
Parent samples :
06d3a77b32d0a02b01871d88ad547d7fb5911d445468598d2b92ca6eadaf2548
eadfef2b763b5d1e06929169e6b0f9858b1af9c51a389a09f0dc87f4e1e8c1ff
SH256 hash:
04743191b74315f4bb4165097233e984a14cf00e5f127f5241c2dbdac52a7ac6
MD5 hash:
02bfa21eb7a66f2e26fc0d3ac176fd25
SHA1 hash:
5334791fd79d1a994449336e5fdaa9f4318e24dd
Link:
https://www.unpac.me/results/d8ae8017-69a7-4733-bac4-982bfa24bb65/
SH256 hash:
f0776161e8ff390fbb8f07a7cbe3c609347d6c65a4188a25b3e9e0547f3b87c6
MD5 hash:
1f4b6ea4f66c5421e96079b563e5ff7c
SHA1 hash:
b1d8fbfff26072a49b2e7895b0675fb519add0a6
Link:
https://www.unpac.me/results/d8ae8017-69a7-4733-bac4-982bfa24bb65/
SH256 hash:
c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32
MD5 hash:
b4e4989e91c06b80c46a6c05a6098f13
SHA1 hash:
597eba336f4593f9f8a53e7b4704990ab24f193f
Link:
https://www.unpac.me/results/d8ae8017-69a7-4733-bac4-982bfa24bb65/
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/c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe c1dfe91a238e3b79887653dc716fa1fe5d4799b8ab78d6b91c0568830b795a32

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/268450/

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