b055fee85472921575071464a97a79540e489c1c3a14b9bdfbdbab60e17f36e4

Analysis

max time kernel
75s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
16-04-2023 03:36

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General

Target

7z2201-x64.exe
Size

1.5MB
MD5

a6a0f7c173094f8dafef996157751ecf
SHA1

c0dcae7c4c80be25661d22400466b4ea074fc580
SHA256

b055fee85472921575071464a97a79540e489c1c3a14b9bdfbdbab60e17f36e4
SHA512

965d43f06d104bf6707513c459f18aaf8b049f4a043643d720b184ed9f1bb6c929309c51c3991d5aaff7b9d87031a7248ee3274896521abe955d0e49f901ac94
SSDEEP

24576:mGIyixBMj+/A2d+UKnvT+LwZWj7iDDVVYrz0rbzGTw3DoA/sk6smE:mGbj+/BpKnvyIxVV/XDoAfmE

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

7zFM.exe7zG.exe

pid process

1556 7zFM.exe
1972 7zG.exe
Loads dropped DLL 12 IoCs

Processes:

7z2201-x64.exe7zG.exe

pid process

1400 7z2201-x64.exe
1352
1352
1352
1352
1352
1352
1352
1352
1352
1352
1972 7zG.exe

pid	process
1556	7zFM.exe
1972	7zG.exe

pid	process
1400	7z2201-x64.exe
1352
1352
1352
1352
1352
1352
1352
1352
1352
1352
1972	7zG.exe

Registers COM server for autorun 1 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Processes:

7z2201-x64.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Program Files\\7-Zip\\7-zip.dll"	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment"	7z2201-x64.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 64 IoCs

Processes:

7z2201-x64.exe

description	ioc	process
File opened for modification	C:\Program Files\7-Zip\Lang\ku.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tt.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.chm	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\co.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kab.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sl.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sq.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\7z.dll	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\7zCon.sfx	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\az.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\th.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\readme.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ku-ckb.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pa-in.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.dll	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\da.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ext.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng2.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ga.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\yo.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ca.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\en.ttt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\zh-tw.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\es.txt	7z2201-x64.exe
File created	C:\Program Files\7-Zip\Lang\sw.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lv.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nl.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ps.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\tk.txt	7z2201-x64.exe
File created	C:\Program Files\7-Zip\Lang\tk.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\af.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bg.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mk.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\si.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ka.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\License.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gu.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lt.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\zh-cn.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hy.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mn.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ru.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hu.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spc.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\descript.ion	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cs.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fa.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\he.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\is.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\uk.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt-br.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sv.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bn.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\el.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\io.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cy.txt	7z2201-x64.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fur.txt	7z2201-x64.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 20 IoCs

Processes:

7z2201-x64.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Program Files\\7-Zip\\7-zip32.dll"	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension"	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\7-Zip\ = "{23170F69-40C1-278A-1000-000100020000}"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\7-Zip	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\DragDropHandlers\7-Zip\ = "{23170F69-40C1-278A-1000-000100020000}"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\7-Zip	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\7-Zip\ = "{23170F69-40C1-278A-1000-000100020000}"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\DragDropHandlers\7-Zip	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment"	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\7-Zip\ = "{23170F69-40C1-278A-1000-000100020000}"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Program Files\\7-Zip\\7-zip.dll"	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\7-Zip	7z2201-x64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\DragDropHandlers\7-Zip	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\DragDropHandlers\7-Zip\ = "{23170F69-40C1-278A-1000-000100020000}"	7z2201-x64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension"	7z2201-x64.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

7zFM.exe7zG.exe

description	pid	process
Token: SeRestorePrivilege	1556	7zFM.exe
Token: 35	1556	7zFM.exe
Token: SeRestorePrivilege	1972	7zG.exe
Token: 35	1972	7zG.exe
Token: SeSecurityPrivilege	1972	7zG.exe
Token: SeSecurityPrivilege	1972	7zG.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

7zFM.exe7zG.exe

pid process

1556 7zFM.exe
1972 7zG.exe

pid	process
1556	7zFM.exe
1972	7zG.exe

C:\Users\Admin\AppData\Local\Temp\7z2201-x64.exe
"C:\Users\Admin\AppData\Local\Temp\7z2201-x64.exe"
1⤵
- Loads dropped DLL
- Registers COM server for autorun
- Drops file in Program Files directory
- Modifies registry class
PID:1400

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1556

C:\Program Files\7-Zip\7zG.exe
"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Desktop\SwitchLimit\" -spe -an -ai#7zMap17214:80:7zEvent31406
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\7-Zip\7z.dll

Filesize
1.7MB

MD5
bbf51226a8670475f283a2d57460d46c

SHA1
6388883ced0ce14ede20c7798338673ff8d6204a

SHA256
73578f14d50f747efa82527a503f1ad542f9db170e2901eddb54d6bce93fc00e

SHA512
f68eb9c4ba0d923082107cff2f0e7f78e80be243b9d92cfab7298f59461fcca2c5c944d4577f161f11a2011c0958a3c32896eba4f0e89cd9f8aed97ab5bc74f9

Download Submit
C:\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
C:\Program Files\7-Zip\7zG.exe

Filesize
668KB

MD5
5ab26ffd7b3c23a796138640b1737b48

SHA1
6dab8c3822a0cab5b621fd2b7f16aebb159bcb56

SHA256
eb775b0e8cc349032187c2329fefcf64f5feed4d148034c060e227adf6d38500

SHA512
2b40489f46e305f7e3455cac25e375711a6a1733861ee7bf1b800b86eaad2f40871c219924ddceb69b9748ae3cf9de59f0edffd7ed7b5e7f35d1239fe0333a78

Download Submit
\??\PIPE\srvsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\Program Files\7-Zip\7-zip.dll

Filesize
92KB

MD5
c3af132ea025d289ab4841fc00bb74af

SHA1
0a9973d5234cc55b8b97bbb82c722b910c71cbaf

SHA256
56b1148a7f96f730d7085f90cadda4980d31cad527d776545c5223466f9ffb52

SHA512
707097953d876fa8f25bfefb19bfb3af402b8a6a5d5c35a2d84282818df4466feba63b6401b9b9f11468a2189dcc7f504c51e4590a5e32e635eb4f5710fd80b2

Download Submit
\Program Files\7-Zip\7z.dll

Filesize
1.7MB

MD5
bbf51226a8670475f283a2d57460d46c

SHA1
6388883ced0ce14ede20c7798338673ff8d6204a

SHA256
73578f14d50f747efa82527a503f1ad542f9db170e2901eddb54d6bce93fc00e

SHA512
f68eb9c4ba0d923082107cff2f0e7f78e80be243b9d92cfab7298f59461fcca2c5c944d4577f161f11a2011c0958a3c32896eba4f0e89cd9f8aed97ab5bc74f9

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zFM.exe

Filesize
935KB

MD5
d36deceeb4c9645aab2ded86608d090b

SHA1
912f4658c4b046fbadd084912f9126cb1ae3737b

SHA256
018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

SHA512
9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2

Download Submit
\Program Files\7-Zip\7zG.exe

Filesize
668KB

MD5
5ab26ffd7b3c23a796138640b1737b48

SHA1
6dab8c3822a0cab5b621fd2b7f16aebb159bcb56

SHA256
eb775b0e8cc349032187c2329fefcf64f5feed4d148034c060e227adf6d38500

SHA512
2b40489f46e305f7e3455cac25e375711a6a1733861ee7bf1b800b86eaad2f40871c219924ddceb69b9748ae3cf9de59f0edffd7ed7b5e7f35d1239fe0333a78

Download Submit
\Program Files\7-Zip\7zG.exe

Filesize
668KB

MD5
5ab26ffd7b3c23a796138640b1737b48

SHA1
6dab8c3822a0cab5b621fd2b7f16aebb159bcb56

SHA256
eb775b0e8cc349032187c2329fefcf64f5feed4d148034c060e227adf6d38500

SHA512
2b40489f46e305f7e3455cac25e375711a6a1733861ee7bf1b800b86eaad2f40871c219924ddceb69b9748ae3cf9de59f0edffd7ed7b5e7f35d1239fe0333a78

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