MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569. 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: 9


Intelligence 9 IOCs YARA 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569
SHA3-384 hash: 46699f71a076f868ca14d273f19b6df587a6621c6bb0d0ee036e1c4d809e7d6d09147cddb69200057dd6918be8e01385
SHA1 hash: 280a218b56747a98ab0eb41c176dbcf812c83a5f
MD5 hash: 606a47c2bcca98a66c2643e73462faa7
humanhash: uniform-lamp-failed-uniform
File name:대동테크윈 견적 요청.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:524'055 bytes
First seen:2021-04-12 06:15:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 18bc6fa81e19f21156316b1ae696ed6b (51 x Formbook, 24 x Loki, 9 x SnakeKeylogger)
ssdeep 6144:1dWojfdw2Kc01ZBuec4j1xOBUftsK6LeA4i:ZfdoDBI4C8Xli
Threatray 4'628 similar samples on MalwareBazaar
TLSH F8B4A7D1F1908CDAED5B09F1AD2BA9302497BE9C54A4410C569EBB1B76F3342309FE1E
Reporter abuse_ch
Tags:exe FormBook geo KOR


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: mail-vip48.idc.redeunifique.com.br
Sending IP: 177.200.201.48
From: Soojeong Choi <soo@daedong114.co.kr>
Reply-To: dd@daedong114.co.kr
Subject: 대동테크윈 견적 요청
Attachment: 대동테크윈 견적 요청.rar (contains "대동테크윈 견적 요청.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
대동테크윈 견적 요청.exe
Verdict:
No threats detected
Analysis date:
2021-04-12 06:26:52 UTC
Tags:
installer
Link:
https://app.any.run/tasks/3f1375de-152a-43f7-b283-b11872d9852b

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/133648/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.431.11301.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/672536
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to prevent local Windows debugging
Detected unpacking (changes PE section rights)
Found malware configuration
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: 385217 Sample: #Ub300#Ub3d9#Ud14c#Ud06c#Uc... Startdate: 12/04/2021 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 8 other signatures 2->44 10 #Ub300#Ub3d9#Ud14c#Ud06c#Uc708 #Uacac#Uc801 #Uc694#Uccad.exe 18 2->10         started        process3 file4 30 C:\Users\user\AppData\Local\...\cttvx0dcf.dll, PE32 10->30 dropped 54 Maps a DLL or memory area into another process 10->54 14 #Ub300#Ub3d9#Ud14c#Ud06c#Uc708 #Uacac#Uc801 #Uc694#Uccad.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 32 dualstack.sni.bigcartel.map.fastly.net 151.101.1.211, 49717, 80 FASTLYUS United States 17->32 34 www.c-voyageinc.com 66.96.162.140, 49739, 80 BIZLAND-SDUS United States 17->34 36 4 other IPs or domains 17->36 46 System process connects to network (likely due to code injection or exploit) 17->46 21 msdt.exe 17->21         started        24 autochk.exe 17->24         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-04-12 06:16:10 UTC
AV detection:
10 of 48 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7db3tkhqdybccwhpl6n4nvusq63laphfkj7xvsir3ys5zxabmvuq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06468ea1dc2797e282fadf08ce089550b3f4f665277c65889106e9d33ed61239
Formbook
5386335debe7df955f9f8cf8e2fa0d5d482b197a3e24c59b0197eba5bf3d28b4
Formbook
53cd0bb46c1d8aa4dc128569b2c2b2b13f0d4a1357e464e5eec019a7f11195d6
Formbook
57605921f72fd210ec256ed3010b59d111c6d3b9e49b9e830e06d6bddce83db4
Formbook
9b9218d3692f38654cde45d5a9b01a6d5cb83aa5442c286fc4e073a6348e08d1
Formbook
c2b8d66b59eabf04dadf3af98e03e6f3aad3f289e826852fabda188863eb679b
Formbook
cad578cb66b96125accf74e291decfbfa2026857ec0efcae51a25ba4cc185ddc
Formbook
d68888aa1e155ac65bd1ddabcf05f61bfff65f79a11cc0ee099200c3da8c5d35
Formbook
ee0a32169adde722c5652fb40046d8251fa8a89ce615a637ed5708372af0d163
Formbook
f3147300f9248e07ffd3a1b7131bed4febad8b0a88eeda27e606f36d04ff1340
Formbook
+ 4'618 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/210412-rfse49p2kj/
Behaviour
Enumerates physical storage devices
Unpacked files
SH256 hash:
a431a853ede615d41f914ccccc84d6a9767de73d92b991b4446b256874b46979
MD5 hash:
6b376ca2fbfc93ad0223a0cefc261676
SHA1 hash:
b6c403939d57eb6cb4e04d271e2c48edc2684bc2
Link:
https://www.unpac.me/results/4970c6df-aa01-45ef-a3dc-f27142401744/
SH256 hash:
f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569
MD5 hash:
606a47c2bcca98a66c2643e73462faa7
SHA1 hash:
280a218b56747a98ab0eb41c176dbcf812c83a5f
Link:
https://www.unpac.me/results/4970c6df-aa01-45ef-a3dc-f27142401744/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.67
Link:
https://yomi.yoroi.company/submissions/f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569

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_InTheFuture
Create hunting rule
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

rar eca5a46b96f446d1180e0c1d007fa6877643a1ef88f8a95ab64dce9bc94f6206

Formbook

Executable exe f8c3b9a8f01e022158ef5f9bc6d69287b6b03ce5527f7ac911de25dcdc016569

(this sample)

  
Dropped by
MD5 427efd38d55faf552a418815a86c74cb
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 eca5a46b96f446d1180e0c1d007fa6877643a1ef88f8a95ab64dce9bc94f6206
Cape
Cape
https://www.capesandbox.com/analysis/133648/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-14 13:39:34 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.032] Anti-Behavioral Analysis::Timing/Delay Check GetTickCount
1) [C0032.001] Data Micro-objective::CRC32::Checksum
2) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0045] File System Micro-objective::Copy File
5) [C0046] File System Micro-objective::Create Directory
6) [C0048] File System Micro-objective::Delete Directory
7) [C0047] File System Micro-objective::Delete File
8) [C0049] File System Micro-objective::Get File Attributes
9) [C0051] File System Micro-objective::Read File
10) [C0050] File System Micro-objective::Set File Attributes
11) [C0052] File System Micro-objective::Writes File
12) [E1510] Impact::Clipboard Modification
13) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
14) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
15) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
16) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
17) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
18) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
19) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
20) [C0017] Process Micro-objective::Create Process
21) [C0038] Process Micro-objective::Create Thread
22) [C0018] Process Micro-objective::Terminate Process