Malware Analysis Report

2024-09-22 06:31

Sample ID 230922-tqtteabb38
Target krisp-1.21.1-installer_pQow-O1.exe
SHA256 d7d9d426d72d2a994839ecba5e9a08a246c0b23d7a894804f070bd18ce513e65
Tags
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

d7d9d426d72d2a994839ecba5e9a08a246c0b23d7a894804f070bd18ce513e65

Threat Level: Shows suspicious behavior

The file krisp-1.21.1-installer_pQow-O1.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary


Loads dropped DLL

Executes dropped EXE

Modifies system certificate store

Script User-Agent

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2023-09-22 16:16

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-22 16:16

Reported

2023-09-22 16:16

Platform

win7-20230831-en

Max time kernel

15s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp N/A

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6 C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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 C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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 C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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 C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp N/A

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A

Processes

C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe

"C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp" /SL5="$400BA,875199,832512,C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ds0ipd79cknej.cloudfront.net udp
NL 108.156.61.144:443 ds0ipd79cknej.cloudfront.net tcp

Files

memory/2888-0-0x0000000000400000-0x00000000004D8000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp

MD5 a13e891e7f1734de75ec6d3645b5604d
SHA1 3f39e07f548f9f056ba55f69cbc90bb75d0c0a05
SHA256 cbc9575ca8ebfbeaaf95bd21b2ac54956c460e975c4c9d71fee791accdedd94e
SHA512 2f74400c821d4f0f2d6386d05bfbb01da9abcd3a341a630c82a35ea976fea26ad62f1b83f27db760fd42dac1fae5dbaf2371b9e61c30e18a2e39f443b1cafdb1

C:\Users\Admin\AppData\Local\Temp\is-BRRCB.tmp\krisp-1.21.1-installer_pQow-O1.tmp

MD5 a13e891e7f1734de75ec6d3645b5604d
SHA1 3f39e07f548f9f056ba55f69cbc90bb75d0c0a05
SHA256 cbc9575ca8ebfbeaaf95bd21b2ac54956c460e975c4c9d71fee791accdedd94e
SHA512 2f74400c821d4f0f2d6386d05bfbb01da9abcd3a341a630c82a35ea976fea26ad62f1b83f27db760fd42dac1fae5dbaf2371b9e61c30e18a2e39f443b1cafdb1

memory/2060-7-0x0000000000240000-0x0000000000241000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab7A7F.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

C:\Users\Admin\AppData\Local\Temp\Tar7B1E.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

MD5 9f4e39beaa14fa7a27555b09134dcf26
SHA1 bcdf0429577fbbb6bfa53d7a41c64d2984aa302f
SHA256 8690d3b179f473d853b988d0805244d81a7e0abc8db84c64a52b1db5ef41943a
SHA512 16b4c978828a247624a67cd62b978c9369e72adbb26dd0ec5cffb283f04c85b58480adee618957310211d2deef3f98050e0cc4a5f5e172225e12375decc1c95e

memory/2888-121-0x0000000000400000-0x00000000004D8000-memory.dmp

memory/2060-122-0x0000000000400000-0x000000000071B000-memory.dmp

memory/2060-123-0x0000000000240000-0x0000000000241000-memory.dmp

memory/2060-125-0x0000000003600000-0x000000000360F000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-UGGU8.tmp\botva2.dll

MD5 67965a5957a61867d661f05ae1f4773e
SHA1 f14c0a4f154dc685bb7c65b2d804a02a0fb2360d
SHA256 450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105
SHA512 c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

memory/2060-129-0x0000000000400000-0x000000000071B000-memory.dmp

memory/2888-131-0x0000000000400000-0x00000000004D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-22 16:16

Reported

2023-09-22 16:18

Platform

win10v2004-20230915-en

Max time kernel

41s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe

"C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

C:\Users\Admin\AppData\Local\Temp\is-F0K69.tmp\krisp-1.21.1-installer_pQow-O1.tmp

"C:\Users\Admin\AppData\Local\Temp\is-F0K69.tmp\krisp-1.21.1-installer_pQow-O1.tmp" /SL5="$6017A,875199,832512,C:\Users\Admin\AppData\Local\Temp\krisp-1.21.1-installer_pQow-O1.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 ds0ipd79cknej.cloudfront.net udp
NL 108.156.61.144:443 ds0ipd79cknej.cloudfront.net tcp
US 8.8.8.8:53 144.61.156.108.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp

Files

memory/4940-1-0x0000000000400000-0x00000000004D8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-F0K69.tmp\krisp-1.21.1-installer_pQow-O1.tmp

MD5 a13e891e7f1734de75ec6d3645b5604d
SHA1 3f39e07f548f9f056ba55f69cbc90bb75d0c0a05
SHA256 cbc9575ca8ebfbeaaf95bd21b2ac54956c460e975c4c9d71fee791accdedd94e
SHA512 2f74400c821d4f0f2d6386d05bfbb01da9abcd3a341a630c82a35ea976fea26ad62f1b83f27db760fd42dac1fae5dbaf2371b9e61c30e18a2e39f443b1cafdb1

memory/1472-6-0x0000000000E50000-0x0000000000E51000-memory.dmp

memory/4940-10-0x0000000000400000-0x00000000004D8000-memory.dmp

memory/1472-12-0x0000000000E50000-0x0000000000E51000-memory.dmp

memory/1472-11-0x0000000000400000-0x000000000071B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-QOQTC.tmp\botva2.dll

MD5 67965a5957a61867d661f05ae1f4773e
SHA1 f14c0a4f154dc685bb7c65b2d804a02a0fb2360d
SHA256 450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105
SHA512 c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

memory/1472-16-0x0000000006810000-0x000000000681F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-QOQTC.tmp\botva2.dll

MD5 67965a5957a61867d661f05ae1f4773e
SHA1 f14c0a4f154dc685bb7c65b2d804a02a0fb2360d
SHA256 450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105
SHA512 c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

memory/1472-20-0x0000000000400000-0x000000000071B000-memory.dmp

memory/4940-22-0x0000000000400000-0x00000000004D8000-memory.dmp