MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dbb7c1c75a4553436b03d96efcb5aa20c7c3668cfd6a50cb2c08fff92d5f499. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4dbb7c1c75a4553436b03d96efcb5aa20c7c3668cfd6a50cb2c08fff92d5f499
SHA3-384 hash: 21c1c9db8388134f4373252b8280aab1c7aaeeda4f8942eaf5bb71f805df39f652559114c3cc051ca4d25060692f3551
SHA1 hash: 91b7c607dcac68260ca4175d21372796614269d5
MD5 hash: 6054a52000e12227158d5da6410896c5
humanhash: chicken-washington-north-cola
File name:reg.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:431'616 bytes
First seen:2021-12-02 14:15:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:KXi3fVFZGcRGOe2oh2T+ycvvbcWuA9XTtlTcdmIg8txfWLn:KXiPVTLze5i6veA9D4K8n2n
Threatray 14'362 similar samples on MalwareBazaar
TLSH T18E94E1B015A9CD90F81EC478826EBB3B29B6BC611900D2E91D55FD29CF37351DB62A33
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
reg.exe
Verdict:
Suspicious activity
Analysis date:
2021-12-02 14:30:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e3da4423-db1f-46b2-ab40-975c2332d7d3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/210719/
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61a8d526f9d950eb11b6acc1/reports/520ea101-b75e-4a99-9015-c014ac4f0d51/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b1128115-4d0b-4a25-8dc5-dc30d5c842a5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/900163
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses cmd line tools excessively to alter registry or file data
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 532643 Sample: reg.exe Startdate: 02/12/2021 Architecture: WINDOWS Score: 100 30 www.almashrabia.net 2->30 32 almashrabia.net 2->32 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 5 other signatures 2->56 10 reg.exe 3 2->10         started        signatures3 process4 signatures5 58 Uses cmd line tools excessively to alter registry or file data 10->58 60 Tries to detect virtualization through RDTSC time measurements 10->60 13 reg.exe 10->13         started        16 reg.exe 10->16         started        process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 13->62 64 Maps a DLL or memory area into another process 13->64 66 Sample uses process hollowing technique 13->66 68 Queues an APC in another process (thread injection) 13->68 18 help.exe 13->18         started        21 explorer.exe 13->21 injected process8 dnsIp9 40 Self deletion via cmd delete 18->40 42 Modifies the context of a thread in another process (thread injection) 18->42 44 Maps a DLL or memory area into another process 18->44 46 Tries to detect virtualization through RDTSC time measurements 18->46 24 cmd.exe 1 18->24         started        34 websitessample.com 198.143.147.58, 49817, 80 SINGLEHOP-LLCUS United States 21->34 36 www.qask.top 104.233.161.201, 49843, 80 PEGTECHINCUS United States 21->36 38 11 other IPs or domains 21->38 48 System process connects to network (likely due to code injection or exploit) 21->48 26 autoconv.exe 21->26         started        signatures10 process11 process12 28 conhost.exe 24->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4dbb7c1c75a4553436b03d96efcb5aa20c7c3668cfd6a50cb2c08fff92d5f499/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-02 14:14:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jw5xyhdvurktinvqhwlo7s22uighyntiz7lkkdfsych77ewv6smq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
7a0cd1587a69eaf31f745c4f39b0bfbbfbf23f1d1b483b1448da6b90fdaf6caa
Formbook
92206b9fa1251b589ab6d14b4828cafe0ec9d9b44df469602b7d3d1ed16ae0e8
Formbook
945e623b814b647326ed96bc5be37010053fdc50f9dce11d96e408c22a8afd4a
Formbook
99889ef9126eddb7fee40e181c9832c734f8cef74736e2c577438300b468751c
Formbook
b3bc74c1f3673da08a95775af5f39dd116a249d8a7e597fcd8bb56e07ae3bcd2
Formbook
cd53040ec21c86fa58a23ef8a844b96b05454800c6aabe0e9d5772e3ab07bce6
Formbook
fafcee9b031f24dbd150b43afbb5cac24bbdccfa4125f4f3017bdd8e94926e9e
Formbook
+ 14'352 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:mwev loader rat suricata
Link:
https://tria.ge/reports/211202-rk5mlshehl/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.scion-go-getter.com/mwev/
Unpacked files
SH256 hash:
c3ae59dc8c5d46f47d75a4def1425ed04c3575f7ccb135f85aa520cbf9f71879
MD5 hash:
e9febdb039b17b9837c054edda7cc278
SHA1 hash:
e762cd219a9dd3e4def9f4fdc85f31f681e98849
Link:
https://www.unpac.me/results/59e6f2a9-9c62-4ccf-bba7-4122b7852655/
SH256 hash:
1eba3e6e55f4aa87ee88dad11183f808f00870bf6277e3ae19fb31400a1dbe5b
MD5 hash:
00b620728472aef2af115e0455930cf8
SHA1 hash:
649a4ad0f13a3176ea36b855c1b36fbce246446a
Link:
https://www.unpac.me/results/59e6f2a9-9c62-4ccf-bba7-4122b7852655/
SH256 hash:
4dbb7c1c75a4553436b03d96efcb5aa20c7c3668cfd6a50cb2c08fff92d5f499
MD5 hash:
6054a52000e12227158d5da6410896c5
SHA1 hash:
91b7c607dcac68260ca4175d21372796614269d5
Link:
https://www.unpac.me/results/59e6f2a9-9c62-4ccf-bba7-4122b7852655/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4dbb7c1c75a4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/4dbb7c1c75a4553436b03d96efcb5aa20c7c3668cfd6a50cb2c08fff92d5f499

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/210719/

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