MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 35f2a840353834118e60c526f77c2a95b276cc9e7531c96260b46aa0b6a515ed. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments 1

SHA256 hash: 35f2a840353834118e60c526f77c2a95b276cc9e7531c96260b46aa0b6a515ed
SHA3-384 hash: 2122bddf9292056f060197b09297b79f4e09c87c9791b3e0f10d817fdac6889810dbfaca8d68884644b813bca3122fa8
SHA1 hash: a49cf277552b6b2902324ec78a01ae09526b9aaa
MD5 hash: 57bc82a2c9998c9c89140b09631251c8
humanhash: april-echo-lima-william
File name:PROFORMA INVOICE-INV393456434.pdf.exe
Download: download sample
Signature Formbook
File size:413'956 bytes
First seen:2021-04-30 08:49:22 UTC
Last seen:2021-04-30 10:02:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ea4e67a31ace1a72683a99b80cf37830 (70 x Formbook, 63 x GuLoader, 54 x Loki)
ssdeep 6144:8PXmt6JS+ycUP8WEqOqvxA57CrLUq3dDClP+Hc6Q1X3BPFsvO9OAYTX4Hdk4Mdw0:jx3P8WEqjb53dDC5+HbQJOO9NAX49k4u
Threatray 4'909 similar samples on MalwareBazaar
TLSH 6E94BEF52BC352F0EC7898F045399091271DFF11119976879BC2BEE926F62A0BB2DC19
Reporter GovCERT_CH
Tags:FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
DNS request
Connection attempt
Unauthorized injection to a system process
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 401105 Sample: PROFORMA INVOICE-INV3934564... Startdate: 30/04/2021 Architecture: WINDOWS Score: 100 32 www.official-tudungrohani.com 2->32 34 www.asian-spicy.com 2->34 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 7 other signatures 2->50 11 PROFORMA INVOICE-INV393456434.pdf.exe 19 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\...\lfxn29y9p2hqm.dll, PE32 11->30 dropped 60 Maps a DLL or memory area into another process 11->60 15 svchost.exe 11->15         started        signatures6 process7 signatures8 62 Modifies the context of a thread in another process (thread injection) 15->62 64 Maps a DLL or memory area into another process 15->64 66 Sample uses process hollowing technique 15->66 68 2 other signatures 15->68 18 explorer.exe 15->18 injected process9 dnsIp10 36 www.premiernmhomes.com 173.239.8.164, 49756, 80 WEBAIR-INTERNETUS United States 18->36 38 www.exairalhayat.com 70.38.12.114, 49767, 80 IWEB-ASCA Canada 18->38 40 9 other IPs or domains 18->40 52 System process connects to network (likely due to code injection or exploit) 18->52 22 colorcpl.exe 12 18->22         started        signatures11 process12 dnsIp13 42 www.huangshanbinguan.com 22->42 54 Modifies the context of a thread in another process (thread injection) 22->54 56 Maps a DLL or memory area into another process 22->56 58 Tries to detect virtualization through RDTSC time measurements 22->58 26 cmd.exe 1 22->26         started        signatures14 process15 process16 28 conhost.exe 26->28         started       
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2021-04-29 12:18:57 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader loader rat
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.richgranddad.com/sbqi/
Unpacked files
SH256 hash:
7e4a209db66b5f10b6a9df6915c9dd693f3f091a4ac8af94c6d16df0f3d9f095
MD5 hash:
381dbd1355018304c1971a84483eb087
SHA1 hash:
0f03c94157b961819a800e7b5075ff0c7a14987f
SH256 hash:
35f2a840353834118e60c526f77c2a95b276cc9e7531c96260b46aa0b6a515ed
MD5 hash:
57bc82a2c9998c9c89140b09631251c8
SHA1 hash:
a49cf277552b6b2902324ec78a01ae09526b9aaa
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information


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

Malspam

Formbook

Executable exe 35f2a840353834118e60c526f77c2a95b276cc9e7531c96260b46aa0b6a515ed

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-30 09:00:34 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
15) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
16) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
17) [C0017] Process Micro-objective::Create Process
18) [C0038] Process Micro-objective::Create Thread