MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec
SHA3-384 hash: e9bffe781058c6299e62e9b31eaf8ee23a53ed1ed087c1a32da614fd71aaee474b591f24813aaba091b0687d0883e3f3
SHA1 hash: a9140f674d4a24324341231384ed7771e11bb71f
MD5 hash: 54d0c6c434824fcaef7f11bb94be36b0
humanhash: earth-coffee-winner-helium
File name:Novi popis narudzbi u prilogu.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:862'208 bytes
First seen:2022-08-01 07:07:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:M/PqiwQpf62iNxlvwL1R1z4rs/sNWl1osrzWFdQjRU3rYzkEVicPdB3O5DV9imcp:ePVf61FwL1RlYs/srOYdQFU3rYYyx
TLSH T16F05F69D721172DFC957C872CEA81C64EA51767B830F9203A02725ADEA1D8A7DF148F3
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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/295474/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.Siggen18.28299.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e77c105c07b66577e584c4/reports/8a93d1ff-43b3-4b10-876d-1302e028b463/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/f7f4db9d-3e02-46ad-91c2-b50d2c2b2b0d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1043981
Signature
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 676475 Sample: Novi popis narudzbi u prilogu.exe Startdate: 01/08/2022 Architecture: WINDOWS Score: 100 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for dropped file 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 9 other signatures 2->42 10 Novi popis narudzbi u prilogu.exe 6 2->10         started        process3 file4 30 C:\Users\user\AppData\Roaming30yDQsGE.exe, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\...\tmp9140.tmp, XML 10->32 dropped 34 C:\...34ovi popis narudzbi u prilogu.exe.log, ASCII 10->34 dropped 50 Injects a PE file into a foreign processes 10->50 14 Novi popis narudzbi u prilogu.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 Queues an APC in another process (thread injection) 14->58 19 explorer.exe 14->19 injected 21 conhost.exe 17->21         started        process8 process9 23 help.exe 19->23         started        signatures10 44 Modifies the context of a thread in another process (thread injection) 23->44 46 Maps a DLL or memory area into another process 23->46 48 Tries to detect virtualization through RDTSC time measurements 23->48 26 cmd.exe 1 23->26         started        process11 process12 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-01 07:03:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vjg4loxwkl77i6mf2ipysnx7kyqa2zx7an5reken3ed7u6y2pdwa._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:euv4 loader rat
Link:
https://tria.ge/reports/220801-hx8elaehhk/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Xloader payload
Xloader
Unpacked files
SH256 hash:
b1a4f59d5b1ddef29779839d7d02297fd1d2869514f72b028db5e5953bd925f5
MD5 hash:
dbf292a6fd340f123284f85164389376
SHA1 hash:
8e5afcd8fa842208e72c224f97f549860cca499d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/5071743a-beaa-4473-a55e-af04935929da/
Parent samples :
b1fe85520c015f8f7344de2923392bfbf216bfa02f9db21c8aa4bb20e7e9f192
51d589a01ef70d7961a53244a56df4427176375e4001481ecae0c88848fc0fed
26255a564473b658bd77619f08223a2a22c42eee8ec43c41b0fbe2335f20ef27
db130f1177379a6c6fc9a87eba59870115f8888d6737f76aba9ea77346d0006c
aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec
SH256 hash:
5e97ccd8dafcb36b3cb772f6a2fd425abcf221ab9ea1930e8c2618c95332f2c6
MD5 hash:
01800f6b045def8d90c649842f56d752
SHA1 hash:
f8434a4636d0772d01aac44bb3f9753a41f01d34
Link:
https://www.unpac.me/results/5071743a-beaa-4473-a55e-af04935929da/
SH256 hash:
abddf734e3bd3cbb0aa14b2e67093a9b0e008f56c33622ae9441148d8c6d0e00
MD5 hash:
177cc36de12e2dac62272c8e0fcb035c
SHA1 hash:
d9057a0027805e41a5c04247dedc5f8a8eefdd61
Link:
https://www.unpac.me/results/5071743a-beaa-4473-a55e-af04935929da/
SH256 hash:
aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec
MD5 hash:
54d0c6c434824fcaef7f11bb94be36b0
SHA1 hash:
a9140f674d4a24324341231384ed7771e11bb71f
Link:
https://www.unpac.me/results/5071743a-beaa-4473-a55e-af04935929da/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa4dc5baf652/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/aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec

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 aa4dc5baf652fff47985d21f8936ff56200d66ff037b12288dd907fa7b1a78ec

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/295474/

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