MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b. 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: 17


Intelligence 17 IOCs YARA 6 File information Comments
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SHA256 hash: 2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b
SHA3-384 hash: acf42958672628dd1152f25327ee9904db25800380baf6065e5ff5f2658b3fc3986f3de4594a9a86a98b068de5bc3b6e
SHA1 hash: cbd5f9e0d794aa2c7f6fb2aaa26c3184c5295eb9
MD5 hash: eb982a57e439fc6e8143ccc85874e979
humanhash: nebraska-diet-maryland-fix
File name:SAO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:835'584 bytes
First seen:2022-07-11 07:23:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:RVF9W2oYNLwr3FePrGX8GJwlfYTY7bRl0PWRtHq0yzySje4oPVI:RA2oYM3FovlfYTxPWTq0cLVCVI
TLSH T195050100E6EAC269F0FB47B80BD1F6F177B5FA110606FA3A7AE42D0D0761A41DE52179
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)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
248
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
SAO.exe
Verdict:
Malicious activity
Analysis date:
2022-07-11 23:12:21 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/117d4b57-1b1a-4b75-9f83-5234035084c7

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/286002/
Detection(s):
SecuriteInfo.com.Trojan.Olock.1.19928.16374.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed shell32.dll
Link:
https://www.filescan.io/uploads/62cbd0507d5b150059f29003/reports/e315e472-0b1d-4d24-a936-8f3ebf250a11/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/c7bf2b69-582c-4c20-b1f2-083b9ff78e4f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1028297
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
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
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 660789 Sample: SAO.exe Startdate: 11/07/2022 Architecture: WINDOWS Score: 100 31 www.clevelandwatertesting.com 2->31 33 clevelandwatertesting.com 2->33 41 Snort IDS alert for network traffic 2->41 43 Multi AV Scanner detection for domain / URL 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 8 other signatures 2->47 11 SAO.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\SAO.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 15 SAO.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.trups88t.com 199.192.20.117, 49872, 80 NAMECHEAP-NETUS United States 18->35 37 dotdrugconsort.com 66.235.200.145, 49848, 80 CLOUDFLARENETUS United States 18->37 39 2 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Performs DNS queries to domains with low reputation 18->51 22 wlanext.exe 1 18->22         started        signatures11 process12 signatures13 53 Creates an undocumented autostart registry key 22->53 55 Tries to steal Mail credentials (via file / registry access) 22->55 57 Modifies the context of a thread in another process (thread injection) 22->57 59 2 other signatures 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-07-11 04:39:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=f6z2cy5lmejbdadxkptbldzu35ze7u5xpf2qfutx3rqx5snkyrnq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:gfv7 loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220711-h8ddlaheb5/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
e8e0a476087352226ea102e89078067fb2d760238bc2121bf1098fdefd188604
MD5 hash:
3733f77949893a2f8206a945e2902629
SHA1 hash:
2cc712b01c2ba920a84dd4d758cf732b65d4a3e0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ea7ab331-030f-47bc-b282-f6deacf5c1ce/
Parent samples :
29b3e1a681ed31baaeaca791e42f48f77ce234920a9782b5d3f8c2fbcf4e518e
a12973c256e6565a0635fb0febaed5ed56f613d23b864df409f32f832a3af19f
892386e40db2d9d22e9fe3ddd47f369e6f68757c68aa98ada9c74a346046eac9
bb76e427660942cdf5c2f684ed7bcdf2be26e53d12adca57ee7757dd2ce4a9c9
1752302de3862bd15be2d539255fed5e71a4180cd987b206542ef8d5f5c6af13
30aa876ee488a9eaa2410ca4127f4f2573dfbc52d0900408ed30fa93906cd355
264f8e9cf8019def3b46a5e9c11cfbaea0ca6c25e73aeb8b2cd1daed15757acc
49c68da125046643fa9fd653710e46de6ca89b8902b4a06bfd99195bd09d501f
55515fcdf9db3576553c72878e05ce6ac03bdf8fd7d8ce1521803d2829c18b75
14a0af77c8fab65395925348cb39c058dd0e619e33055f6a3f895c295aaa6783
58babe3f9ef385e4ba8b10355a7ed59a6fe81d4742d86d60362b77b57c4fe8fc
0bfa565bad2de6637585f1f14d5469f78b98f6ad3876b59f9963706a30ddfb47
2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b
584cef5ff03652f91f00be5efce4897792b6980b878a95e73f9d7a2414331a2a
123bbe894d4ce404e2336e991dfc0c13536590b510c9cc7abe0a542dfc94ce2e
0a76b25a4316ca2df59f110b3b967e290fd6459132a0e1b1458fb31706927030
519272a5abfcb2fa13ad4545e0e3b87265c849e45300179ceb0b666c34e84245
2050bb37c43505f12110e7949437a1a8464b19b3e41d22f1a68a8ed0166d4b35
SH256 hash:
5e97ccd8dafcb36b3cb772f6a2fd425abcf221ab9ea1930e8c2618c95332f2c6
MD5 hash:
01800f6b045def8d90c649842f56d752
SHA1 hash:
f8434a4636d0772d01aac44bb3f9753a41f01d34
Link:
https://www.unpac.me/results/ea7ab331-030f-47bc-b282-f6deacf5c1ce/
SH256 hash:
b71ada8fb0ec28b747f48ecacd4ef76e67009f1537ed50d028ace205eb448efe
MD5 hash:
c7c0d5bb8491a7cd07bcdcee85083385
SHA1 hash:
070eb53202ab7a41b6853b5670041632789ea577
Link:
https://www.unpac.me/results/ea7ab331-030f-47bc-b282-f6deacf5c1ce/
SH256 hash:
2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b
MD5 hash:
eb982a57e439fc6e8143ccc85874e979
SHA1 hash:
cbd5f9e0d794aa2c7f6fb2aaa26c3184c5295eb9
Link:
https://www.unpac.me/results/ea7ab331-030f-47bc-b282-f6deacf5c1ce/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2fb3a163ab61/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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 2fb3a163ab611211807753e6158f34df724fd3b7797502d277dc617ec9aac45b

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/286002/

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