MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2
SHA3-384 hash: 7b4c66f86d03600b8119fda4416b403fe953bca7b83064d50a69a88c9c848c85f22da97ce0cc23c0f5d85d4b19b16b6e
SHA1 hash: 6e1b53262e07439cf6493a5d71bbc4fa34e02137
MD5 hash: 7ebcd38de21ed71d4e1aa1c7875a19d1
humanhash: eight-quebec-diet-cat
File name:ajoform.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:344'057 bytes
First seen:2022-11-02 23:59:36 UTC
Last seen:2022-11-03 02:04:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 6144:tweE5KQacfh5+CT2h6mT6SUEljewoYlI7pK8/TV0pFNeQNGzkC:EaQ5+i2wxsHy48VMFNBNckC
TLSH T11074AE91F3846CB7E81A13B28D369B11662BFE588AB5531F251EB5255DB338334E3C0B
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon f8dc888898a898b8 (4 x njrat, 4 x AgentTesla, 2 x AsyncRAT)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
ajoform.exe
Verdict:
Malicious activity
Analysis date:
2022-11-01 08:43:12 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/5d24e6fa-0322-4ab9-bebc-70c85687d0d2

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/327440/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.2929.10702.843.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Sending a custom TCP request
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/47637/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
babar nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63630485b6dcda626c0a7a1d/reports/cb94bb24-3670-4556-b3fd-1a5ed1e9bc20/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/9715df5d-c9b3-4d62-bd82-12fb1565004e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1103859
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 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 dnsIp2 2 Behavior Graph ID: 736520 Sample: ajoform.exe Startdate: 03/11/2022 Architecture: WINDOWS Score: 100 32 www.ryanxchow.com 2->32 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->48 50 5 other signatures 2->50 11 ajoform.exe 18 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\ybihcaaf.exe, PE32 11->30 dropped 14 ybihcaaf.exe 11->14         started        process6 signatures7 60 Multi AV Scanner detection for dropped file 14->60 62 Maps a DLL or memory area into another process 14->62 64 Tries to detect virtualization through RDTSC time measurements 14->64 17 ybihcaaf.exe 14->17         started        process8 signatures9 36 Modifies the context of a thread in another process (thread injection) 17->36 38 Maps a DLL or memory area into another process 17->38 40 Sample uses process hollowing technique 17->40 42 Queues an APC in another process (thread injection) 17->42 20 systray.exe 17->20         started        23 explorer.exe 17->23 injected process10 dnsIp11 52 Modifies the context of a thread in another process (thread injection) 20->52 54 Maps a DLL or memory area into another process 20->54 56 Tries to detect virtualization through RDTSC time measurements 20->56 26 cmd.exe 1 20->26         started        34 www.xxajhsc.com 23->34 58 System process connects to network (likely due to code injection or exploit) 23->58 signatures12 process13 process14 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-11-01 11:41:51 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=57jnklszf5bmsvulsn2x6lqm2ogu7utdvq3owmmrbk75objqa7ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:ao29 rat spyware stealer trojan
Link:
https://tria.ge/reports/221103-aabs4scha7/
Behaviour
Enumerates system info in registry
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/45e47f4d-42ef-48e2-b0c5-6c244c54d3da
Unpacked files
SH256 hash:
50f918f95a0bbe9683fdc7532b2226a72960241d55fdc3994625e6109bc1c38f
MD5 hash:
58ecf75c0fccf54286925106736bc085
SHA1 hash:
01112c3c1a94aa739e15a060d1b239547f90e670
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/e16ed897-2aa1-4e39-8f7a-17c21ef0068f/
Parent samples :
09da53e995501bda431956e08c48092a4a15c3421ec5074f683521e2a570bf61
efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2
7d59b2ad4e3d33dd0919b627f3a8afb3b50976506662e6be6529cf9a7f0a6ffb
SH256 hash:
4897a0da2a9d3fc1eaa69aedc79dee66a31266cb513f3bacd95a55e312fce2eb
MD5 hash:
fcfc1cdd1535b7d0e2c171c5aecb7c28
SHA1 hash:
26a3a3530c280523fef961f18e8e36cf1adeeb77
Link:
https://www.unpac.me/results/e16ed897-2aa1-4e39-8f7a-17c21ef0068f/
SH256 hash:
1cd880e9a9652afdc7a00af77302a7c8516481134c46cb95d07f5d2d7965bce6
MD5 hash:
0314f3906ef8859a1247194bbb729921
SHA1 hash:
2df628fbc3d8d1b2fc024e7e98afc4b13cdb9366
Link:
https://www.unpac.me/results/e16ed897-2aa1-4e39-8f7a-17c21ef0068f/
SH256 hash:
475fca72242cd7ef83126c652564379caeb73ac91bed3343b66ba11806a101f7
MD5 hash:
b6efa54ddce0c1f7b830386d56f8a0dd
SHA1 hash:
2db71b9c9dee710b7f1af5436eb2c13d596a660d
Link:
https://www.unpac.me/results/e16ed897-2aa1-4e39-8f7a-17c21ef0068f/
SH256 hash:
efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2
MD5 hash:
7ebcd38de21ed71d4e1aa1c7875a19d1
SHA1 hash:
6e1b53262e07439cf6493a5d71bbc4fa34e02137
Link:
https://www.unpac.me/results/e16ed897-2aa1-4e39-8f7a-17c21ef0068f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/efd2d52e592f42c9568b93757f2e0cd38d4fd263ac36eb31910abfd7053007e2

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/327440/

Comments