MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4. 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: 11


Intelligence 11 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4
SHA3-384 hash: 65b050d70ff9b2b39b4bf8a3f57c9d5ec41321466fdd209d694a375beb679a9b0f5aced079f855080e3f96b76f1b12a0
SHA1 hash: f3c65cdf08f0a4e5301e64ec778573d73cfb7e12
MD5 hash: 49f29d3749182242173dde305e7557ad
humanhash: december-nebraska-hot-west
File name:BANK TRANSFER SLIP.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:718'336 bytes
First seen:2020-10-20 08:38:40 UTC
Last seen:2020-10-26 07:33:34 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:yaqHHwU9e2iNeRLRROZt/bDHCWKdy+nVv4e19l/r04Ww5ueubb9jH:yy1UCNDHCWN+nd4KHUw5uTbb9
Threatray 2'565 similar samples on MalwareBazaar
TLSH 26E4F1B222F89F65E03F9379443460418FF5E113D692E65AFEDC12AA4FA2B514B33712
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: serve0.maheendran.pw
Sending IP: 104.168.211.77
From: Viky<hr@maheendran.pw>
Subject: Payment details from Sea Pine Power Limited
Attachment: BANK TRANSFER SLIP__PDF.r00 (contains "BANK TRANSFER SLIP.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73375/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
Creating a window
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/497407
Signature
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 300912 Sample: BANK TRANSFER SLIP.exe Startdate: 20/10/2020 Architecture: WINDOWS Score: 100 31 www.62axckbs5.xyz 2->31 33 cdn.onenote.net 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 6 other signatures 2->47 11 BANK TRANSFER SLIP.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\BANK TRANSFER SLIP.exe.log, ASCII 11->29 dropped 57 Injects a PE file into a foreign processes 11->57 15 BANK TRANSFER SLIP.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 nutinbutter.com 34.102.136.180, 49721, 80 GOOGLEUS United States 18->35 37 www.profitsgear.com 155.159.33.54, 49724, 80 CLAYERLIMITED-AS-APClayerLimitedHK South Africa 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 22 chkdsk.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 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/c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 00:37:34 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zckgw46kec5civhfcdyidkothvqndoussfdruc5fvo3et7ynexka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
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Formbook
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Formbook
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Formbook
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e6d2c97461c6aac9ea130eaa96f9927b57998c04b5e7573a555caa729178a70c
Formbook
fd9f113a78e94fc975ba4e5e940c91395e63b5ea904e7690fbad9f569b6da1b8
Formbook
+ 2'555 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201020-9zryaxgm3x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.udscan.com/rrd/
Unpacked files
SH256 hash:
c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4
MD5 hash:
49f29d3749182242173dde305e7557ad
SHA1 hash:
f3c65cdf08f0a4e5301e64ec778573d73cfb7e12
Link:
https://www.unpac.me/results/bfa06531-5eb9-46b8-95a2-22c19adccbe9/
SH256 hash:
99c51e88541102cc506fc35447b9909b512860f4762f73be9a82762280593866
MD5 hash:
301fe4a4dff43f23c1e281166978d198
SHA1 hash:
9358a885bdf51afe338167c60464066ad05cdaac
Link:
https://www.unpac.me/results/bfa06531-5eb9-46b8-95a2-22c19adccbe9/
SH256 hash:
16a6a60a14776460b48dc7d0dc5862b7be9ef636c0b360df15928e04d0ddd835
MD5 hash:
ecea89ea55df6cb322920545527a1220
SHA1 hash:
cb129ac53c7fac9effc9f9384fee8758408458b4
Link:
https://www.unpac.me/results/bfa06531-5eb9-46b8-95a2-22c19adccbe9/
SH256 hash:
bac5797bde4b2810766a40d95bcdb825ac5b395fcbadd139daa19a44a6cdc049
MD5 hash:
a92cc1f6e0a2742350dfda6726db14c0
SHA1 hash:
e5404e3ed46498deb8ad8966a774540c2b8e9c1e
Link:
https://www.unpac.me/results/bfa06531-5eb9-46b8-95a2-22c19adccbe9/
SH256 hash:
6db0f8d627e80114036c058905b1fd1bb35db05e54017903bd3b7b0c06b86e5c
MD5 hash:
a51170af60c7f956e87875e85fb43ce0
SHA1 hash:
f9843bbbbe5b8402e96306c86356e4845beb55f8
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/bfa06531-5eb9-46b8-95a2-22c19adccbe9/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4

File information

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

Malspam

Formbook

zip 33d9fe00b9cc9f0f34e0c72317787a6229dde85b3b00fc8d524f024dbf77b153

Formbook

Executable exe c8946b73ca20ba2454e510f081a9d33d60d1ba9291471a0ba5abb649ff0d25d4

(this sample)

  
Dropped by
MD5 fcae9d6e1927f332d201454aa4ea4d9e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73375/
  
Dropped by
SHA256 33d9fe00b9cc9f0f34e0c72317787a6229dde85b3b00fc8d524f024dbf77b153

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