MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892
SHA3-384 hash: bdf5820abe1e4a3fbba22bca13fe1d8a347081f2b0d417c6bf64eafad1bea70b58db7abb3bf41477259f8bafb7f23a44
SHA1 hash: fbe82085f8df30bd7968c54afcd583bcb9bdc8dc
MD5 hash: cc13b6f169803d95f021b0ae44ffe5cb
humanhash: social-iowa-shade-iowa
File name:January RFQ..exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'572'352 bytes
First seen:2021-01-19 12:54:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:ub2ZSo+x++cx/mL94SQ42jQnrUAszoOfJPl9ll7OqKoe2:ub4SoR+cBmBA/jQrUhzoOJOqKoe
Threatray 3'576 similar samples on MalwareBazaar
TLSH AC75F79D311072EFC857D4B2DAA81CA4FB9174BB831F4203A12716ADEA4D997CF254F2
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: cbdjo.cam
Sending IP: 111.90.159.32
From: Daniel Gomez <krystianrednose@interia.pl>
Reply-To: mzahar04@protonmail.com
Subject: FW:FW:RFQ
Attachment: January RFQ..zip (contains "January RFQ..exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
141
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
January RFQ..exe
Verdict:
Malicious activity
Analysis date:
2021-01-19 13:03:26 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/3042dfd8-39ae-4551-9842-493c97e9f893

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/112878/
Detection(s):
Win.Packed.Genkryptik-9822492-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/584985
Signature
Binary contains a suspicious time stamp
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected unpacking (changes PE section rights)
Found malware configuration
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
PE file contains section with special chars
PE file has nameless sections
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: 341524 Sample: January RFQ..exe Startdate: 19/01/2021 Architecture: WINDOWS Score: 100 37 www.tokomw.com 2->37 39 tokomw.com 2->39 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 12 other signatures 2->51 11 January RFQ..exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\January RFQ..exe.log, ASCII 11->29 dropped 14 January RFQ..exe 11->14         started        process6 signatures7 59 Modifies the context of a thread in another process (thread injection) 14->59 61 Maps a DLL or memory area into another process 14->61 63 Sample uses process hollowing technique 14->63 65 Queues an APC in another process (thread injection) 14->65 17 explorer.exe 14->17 injected process8 dnsIp9 31 www.12257.xyz 23.101.8.193, 80 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 17->31 33 legendsfxmarketsreview.com 34.102.136.180, 49721, 49731, 80 GOOGLEUS United States 17->33 35 7 other IPs or domains 17->35 43 System process connects to network (likely due to code injection or exploit) 17->43 21 msiexec.exe 12 17->21         started        signatures10 process11 dnsIp12 41 www.12257.xyz 21->41 53 Modifies the context of a thread in another process (thread injection) 21->53 55 Maps a DLL or memory area into another process 21->55 57 Tries to detect virtualization through RDTSC time measurements 21->57 25 cmd.exe 1 21->25         started        signatures13 process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-01-19 08:42:05 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tgscxwgiz63lhnurmlbph5sxwozzolotkmzy74l2zsy4tl6nlcja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
011e18466a15d6a18399caac2f3317b86ae944699f0ef8b332e9995b47767a6f
Formbook
1f9d1bffe188b76bbd97cb2fd59ab47248b71fcede2f415ca29fcc0f1040bbee
Formbook
39872cee88d7cf4d0f0cc42d09348b6fea960a62861fab210bf257c4e6bc3a36
Formbook
5d23faa05258eb51b196fee00263dc5e4556a37301d312563843a7ac8494ee19
Formbook
805a071c8e38fca4e3602881ff33ac7a2afba65bb61cd7adda873950bf2779cb
Formbook
9e15ebbf48baef0f33c9ceb2e69566ec71d77271270a65dc5a7cf19a450f1a62
Formbook
c079b62cce0d0718c3b1f26c3f0f359a7df94acf7e75aea710979fe338ea1f4f
Formbook
c1a564800071499d39ba2f7e92c403c9ec87ca7837bafd76d00dbe37589c9eb3
Formbook
cb9e52fd5d9184843d3d0a1b79e604e1c19be1a09df19c2f444632d716c30e9e
Formbook
e56fe870da3015a5537b82acf5b9228953cafa74235b5c9257eaf049a6045cc6
Formbook
+ 3'566 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210119-lare7dybee/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Gathers network information
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.tokomw.com/wt8z/
Unpacked files
SH256 hash:
c29b3ca19f371f7c0bbe0d3069eef3c7af1b11e7af836bf417dacd8c3074f6ce
MD5 hash:
d3a62b8f83bd99d3423e0db7bdb7e1b8
SHA1 hash:
3824ccacab2736e215da54a0f3b401f0123fd973
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3a0cd909-3905-4589-8fef-29a122cbd212/
Parent samples :
cb9e52fd5d9184843d3d0a1b79e604e1c19be1a09df19c2f444632d716c30e9e
c079b62cce0d0718c3b1f26c3f0f359a7df94acf7e75aea710979fe338ea1f4f
011e18466a15d6a18399caac2f3317b86ae944699f0ef8b332e9995b47767a6f
99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892
SH256 hash:
b56fba8af8c521580dc903180bfc1ed659ff8185f30c1167c583374f7cffac66
MD5 hash:
8a2559bb0515a1ea86e96a8ad61a600c
SHA1 hash:
cb831ed70bcb615d3bcb109107865e5f6a4f817b
Link:
https://www.unpac.me/results/3a0cd909-3905-4589-8fef-29a122cbd212/
SH256 hash:
f72ed00f26f0edf28b5e2d3075e175c2330f49429b79a2e150c208238f4e544b
MD5 hash:
dc5ad7eabc5e16aeda141eb9fbb2b4d5
SHA1 hash:
206634fdbe3be03e7b01b6bb8433da65fb670332
Link:
https://www.unpac.me/results/3a0cd909-3905-4589-8fef-29a122cbd212/
SH256 hash:
99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892
MD5 hash:
cc13b6f169803d95f021b0ae44ffe5cb
SHA1 hash:
fbe82085f8df30bd7968c54afcd583bcb9bdc8dc
Link:
https://www.unpac.me/results/3a0cd909-3905-4589-8fef-29a122cbd212/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.89
Link:
https://yomi.yoroi.company/submissions/99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892

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:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del

File information

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

Malspam

Formbook

zip 2a7189e7f8ddf817a6725f2f2bdcc26b2aae146a93bb10f4b04f2298e1e045ee

Formbook

Executable exe 99a42bd8c8cfb6b3b69162c2f3f657b3b3972dd353338ff17accb1c9afcd5892

(this sample)

  
Dropped by
MD5 ec69ac379e9641af70cca2c8abe0d1ca
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2a7189e7f8ddf817a6725f2f2bdcc26b2aae146a93bb10f4b04f2298e1e045ee
Cape
Cape
https://www.capesandbox.com/analysis/112878/

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