MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
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SHA256 hash: 2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da
SHA3-384 hash: d4c4e441899f8dfe6cf75d990238d82ff2fc3521c2f4fc95962109f7525f58ddb88eddc84515b126caf8a9a3c6f6fc8f
SHA1 hash: ac547ca79d74d912e4421e88fc5f78a3a42a55eb
MD5 hash: 75d3f7814819a398070241093d4c0b13
humanhash: potato-purple-texas-alpha
File name:Purchase Order #11022020-pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:622'080 bytes
First seen:2022-05-30 03:25:09 UTC
Last seen:2022-05-30 13:14:28 UTC
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:CBO61AgkW07UwWoHQeWNW1SnnzbLgvINVzKLB3Jtke8f+7sJ:a+pnLlHQVWYnPLgvINV+LlP6+
TLSH T19BD42236A3B8371AF6A95BFA6DF4D60053BDC871E516C6903E8234FE4E02F4081615AB
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 00ccf096ccc0d400 (21 x FormBook, 18 x AgentTesla, 11 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
261
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Purchase Order #11022020-pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-05-30 03:26:18 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/d4ef7598-c8c7-4885-bc84-0881611580d4

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/275300/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.3090.11119.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/6294394b3ec49f83a6d969ad/reports/0e94cec6-73aa-496b-bc60-476698c6d9a5/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/56a4c3dc-fa6d-4392-af72-47083860cfb4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1003364
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd or bat file
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 635860 Sample: Purchase Order #11022020-pdf.exe Startdate: 30/05/2022 Architecture: WINDOWS Score: 100 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Yara detected AntiVM3 2->61 63 8 other signatures 2->63 10 Purchase Order #11022020-pdf.exe 7 2->10         started        process3 file4 39 C:\Users\user\AppData\...39ZBoeRxevz.exe, PE32 10->39 dropped 41 C:\Users\user\AppData\Local\...\tmp89C6.tmp, XML 10->41 dropped 67 Adds a directory exclusion to Windows Defender 10->67 14 Purchase Order #11022020-pdf.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        21 UpdateNotificationMgr.exe 10->21         started        signatures5 process6 dnsIp7 69 Modifies the context of a thread in another process (thread injection) 14->69 71 Maps a DLL or memory area into another process 14->71 73 Sample uses process hollowing technique 14->73 75 Queues an APC in another process (thread injection) 14->75 24 explorer.exe 14->24 injected 28 conhost.exe 17->28         started        30 conhost.exe 19->30         started        43 192.168.2.1 unknown unknown 21->43 signatures8 process9 dnsIp10 45 www.techtequil.com 24->45 47 www.farsca.net 24->47 65 System process connects to network (likely due to code injection or exploit) 24->65 32 cmstp.exe 24->32         started        signatures11 process12 signatures13 49 Self deletion via cmd or bat file 32->49 51 Modifies the context of a thread in another process (thread injection) 32->51 53 Maps a DLL or memory area into another process 32->53 55 Tries to detect virtualization through RDTSC time measurements 32->55 35 cmd.exe 1 32->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-30 02:08:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 41 (48.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fkcrwtw77zkty2h5pwinouhiunnx2z254spzqiswv3zz2xtcotna._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ae25 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220530-dy66psccf6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
930ad9d2cb793005580bfce82af3f49650d738e691a6a9aef537d8d3d47516a1
MD5 hash:
d1c4c7f310fb64891a1cdfedd62eeed1
SHA1 hash:
9b89d545bb9b25dd43fba3eb0b695ce186c29271
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/cdb63452-8014-41ad-8833-f887a717e517/
Parent samples :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 hash:
840be1d54ac08fdec3556b93ff92af7e2f6d7c909a7606c59c5ac777670e2742
MD5 hash:
cc4a8210cb3e6146e928003944c15fbf
SHA1 hash:
e218e2b2a8c8e204c19d6cc6aec987b87544d566
Link:
https://www.unpac.me/results/cdb63452-8014-41ad-8833-f887a717e517/
SH256 hash:
6c411097370a88f168a07b2ff8947c775dc406e23cdab9ee131652d83776743f
MD5 hash:
3dee1a8083d4a6a1b38ffdebe70e861c
SHA1 hash:
9030a7e59b33fa2d2cdac6282a89749367d8a69c
Link:
https://www.unpac.me/results/cdb63452-8014-41ad-8833-f887a717e517/
SH256 hash:
d5448870d1fcd2eddb73fefb4c004518c73d5ff969441532d2af46dcb2f4c51a
MD5 hash:
739e6d97e74a4e8d85e048beddb9b419
SHA1 hash:
11a50a97fa98d2acedd2190e3d71a3e7fce30e23
Link:
https://www.unpac.me/results/cdb63452-8014-41ad-8833-f887a717e517/
SH256 hash:
2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da
MD5 hash:
75d3f7814819a398070241093d4c0b13
SHA1 hash:
ac547ca79d74d912e4421e88fc5f78a3a42a55eb
Link:
https://www.unpac.me/results/cdb63452-8014-41ad-8833-f887a717e517/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2a851b4edffe/report/overview.html
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/2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da

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 2a851b4edffe553c68fd7d90d750e8a35b7d675de49f982256aef39d5e6274da

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/275300/

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