MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae. 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
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SHA256 hash: a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae
SHA3-384 hash: f732796fc0e303a6953f2200d96501733a3cda6059ccdc8f4e02238d5e914616fb734992895288d2489d2310096afa36
SHA1 hash: 17d25270e67ab995efcc23ca8f887b4ebd361ca1
MD5 hash: f0649cf04d4547f11fd5504fe312d06c
humanhash: hydrogen-tennis-nebraska-solar
File name:봉인된 구매 주문_Pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:545'792 bytes
First seen:2022-05-16 06:50:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:0z/OrzcreO4Z05KxiZVfbnT4Wg0KYMBcNip:vrzcn4h6VfjOX
TLSH T142C40247AFDC9263E7BE2EB7A23503116FA5B1146022E30F1E563199EC627C73DA2714
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 8d17326b6945410b (11 x Formbook, 5 x SnakeKeylogger, 4 x Loki)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
211
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
봉인된 구매 주문_Pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-05-16 08:03:15 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/7208693d-121a-4e01-af77-566b3e7e4a5c

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/270903/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed replace.exe wacatac
Link:
https://www.filescan.io/uploads/6281f4606c85fb249699b4ba/reports/189ebc29-32ad-4011-9300-61ebf1407223/overview
Result
Verdict:
UNKNOWN
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/48e9b927-2b91-4ef7-aaac-87eece9b48ff
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/994619
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
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 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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 627112 Sample: #Ubd09#Uc778#Ub41c #Uad6c#U... Startdate: 16/05/2022 Architecture: WINDOWS Score: 100 34 Found malware configuration 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 9 other signatures 2->40 10 #Ubd09#Uc778#Ub41c #Uad6c#Ub9e4 #Uc8fc#Ubb38_Pdf.exe 3 2->10         started        process3 file4 30 #Ubd09#Uc778#Ub41c...c#Ubb38_Pdf.exe.log, ASCII 10->30 dropped 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Injects a PE file into a foreign processes 10->56 14 MSBuild.exe 10->14         started        17 MSBuild.exe 10->17         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 19 explorer.exe 14->19 injected 66 Tries to detect virtualization through RDTSC time measurements 17->66 process8 dnsIp9 32 www.tydxa.com 19->32 42 System process connects to network (likely due to code injection or exploit) 19->42 44 Uses netstat to query active network connections and open ports 19->44 23 NETSTAT.EXE 19->23         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 23->46 48 Maps a DLL or memory area into another process 23->48 50 Tries to detect virtualization through RDTSC time measurements 23->50 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-16 03:13:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uxo4t7snqfxi3f5twoa2n5suzydf3qlrmkirpgbcwvit26zy3cxa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m74s rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220516-hmgh5afeb5/
Behaviour
Enumerates system info in registry
Modifies registry class
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
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
eb663bf301caa6c5075804e8de4ac1d4f8700453ed0a13fd9b69f455a7e9845b
MD5 hash:
bedcad6e665e619876ef03559a49dabf
SHA1 hash:
f07757d8ec89acaffe2e96802651d25bbd43d602
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/8fcc34ec-3377-4bc3-b391-b0f4dee92b3d/
Parent samples :
a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae
68a837f8646bc09c634d13045d36ee05f43f319e88c2a47295d01c47574accae
786d7fef1f6b313461e01a67b89db558dfd79a558a2669e73ee0483717600bd0
9997ae9723bd215339367807584c52f6e7c99910d5d155f10294b7a8ac55ba1a
1faa82e1dc2bba77a42701af97cd8c39b420e6ea0590d34a12616d9ca1da928f
02797e35c2aa328b5eca0005ffed1d035d10e90e88f7e33723e66723b08d7b41
SH256 hash:
709fdbef8932044e42231f14888aa12b12ddc571e6daba8af86d624a39fa63bf
MD5 hash:
a7a6647650fe0204d1ab042824d638be
SHA1 hash:
a1194aba19ab6190a412073fe1918cd1b559aacf
Link:
https://www.unpac.me/results/8fcc34ec-3377-4bc3-b391-b0f4dee92b3d/
SH256 hash:
94649f32e30c419474f4ae207824ccf14cee0226e1152b99eea927c29ee7ef0b
MD5 hash:
2549fba5654ed5da6a904d3539b87203
SHA1 hash:
7ebe4391975cf8abf2e6547b8ce2443dd34f1672
Link:
https://www.unpac.me/results/8fcc34ec-3377-4bc3-b391-b0f4dee92b3d/
SH256 hash:
f3d2d736ff8ae536f2a02c479bae76365c32e1601859c533b9529818903087f0
MD5 hash:
d8de02cb10a0b2b3b0acddc6b7e756ea
SHA1 hash:
72a021454fbc1ebeb5dcd2184ece88ba2f25e200
Link:
https://www.unpac.me/results/8fcc34ec-3377-4bc3-b391-b0f4dee92b3d/
SH256 hash:
a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae
MD5 hash:
f0649cf04d4547f11fd5504fe312d06c
SHA1 hash:
17d25270e67ab995efcc23ca8f887b4ebd361ca1
Link:
https://www.unpac.me/results/8fcc34ec-3377-4bc3-b391-b0f4dee92b3d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a5ddc9fe4d81/report/overview.html
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/a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae

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

Executable exe a5ddc9fe4d816e8d97b3b381a6f654ce065dc1716291179822b5513d7b38d8ae

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/270903/

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