328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265

Analysis

max time kernel
42s
max time network
46s
platform
windows7_x64
resource
win7-20220414-en
submitted
20-06-2022 06:27

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General

Target

328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe
Size

1.9MB
MD5

82ec6b7ef5830a1bbf2e0339f58d588c
SHA1

9141f592a1571d5f88850b46aa8a8219a57c42fd
SHA256

328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265
SHA512

c84a2bdc1c2ec085b2f15a92e1959829aff0229217c00ca658ddab057736a81eb998a4cb76addddbc62f22df964a1d37696c7bed0b302d5c3f65d9812ce401c9

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
908	RyexhoIubem.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	RyexhoIubem.exe

Loads dropped DLL 9 IoCs

pid	Process
1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe
1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe
1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe
908	RyexhoIubem.exe
908	RyexhoIubem.exe
908	RyexhoIubem.exe
908	RyexhoIubem.exe
908	RyexhoIubem.exe
908	RyexhoIubem.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\fir\raj\mubik.dat	RyexhoIubem.exe
File opened for modification	C:\Windows\System32\dnsapi.dll	RyexhoIubem.exe
File opened for modification	C:\Windows\SysWOW64\dnsapi.dll	RyexhoIubem.exe

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

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	RyexhoIubem.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	RyexhoIubem.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardManufacturer	RyexhoIubem.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	908	RyexhoIubem.exe
Token: SeTakeOwnershipPrivilege	908	RyexhoIubem.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 908	1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe	27
PID 1596 wrote to memory of 908	1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe	27
PID 1596 wrote to memory of 908	1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe	27
PID 1596 wrote to memory of 908	1596	328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe	27

C:\Users\Admin\AppData\Local\Temp\328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe
"C:\Users\Admin\AppData\Local\Temp\328252b9e55775ba66c44b45974d1e2e4f18540d31ac7d06054e42c0f1c56265.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\RyexhoIubem.exe
  "C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\RyexhoIubem.exe" spa="C:\Users\Admin\AppData\Roaming\RewdTup\Jikiilu.exe"
  2⤵
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Drops file in System32 directory
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\RyexhoIubem.exe

Filesize
97KB

MD5
2db7b52bfb4ff9d0067672f77e3996c3

SHA1
83589469e2eaa884c1740916569fabd91f49819e

SHA256
430c6b84be972cb04b0e91f739c8e47e7ff2508017de0cebd1fe28b0a05581eb

SHA512
db04b44f472f74fb98b4dec3b3db79c941f961c1afcea500becfddfae855ba34689cbc878b30e7963c5ff31472309d9d41dab5be0a872808a4bb158693856516

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libnspr4.dll

Filesize
288KB

MD5
74485152d7f2c06fe413f48c7da4ff33

SHA1
a07c30fedc80e5f4c2cc0be5202d64f51b015b44

SHA256
3c019cb209ba4f01015ffbb628d988735d2c5d9805abd7dd4dab441ea82eb688

SHA512
43b3b3bd5d5f3afd845cc79d68e942836f95f708eac96cd84d09b774d8f92f772b2353a273185b6be336603b5b283a486756e95ff26bb1ecd4fe84667cbe6f52

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libplc4.dll

Filesize
47KB

MD5
08bacf2967fd8ea468c69f6e8d31b914

SHA1
eec97e847be6303013e468979b861ff74d4279ed

SHA256
2f143cac2efdc21b98620338c6f0404dfce812ee5741960ff68671ed0b0f3a9a

SHA512
2550e9481d2604b9c62b97ede184af4a8b2db1333b6707e01bc67b3699f72b0b764a238c86801d4457007e31977a181007f67c300f7c47899d4a771d05c2e97a

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libplds4.dll

Filesize
45KB

MD5
56c1c79274ef5728b1f50986a5a8f22e

SHA1
32f67170194ce27736e564b5328dbab6c4be33b3

SHA256
8720171993fc29c517a8124b8235c2c5d71b0ae4c236685ba202088326d780de

SHA512
6198edad58ffbb9109c827de704a6d67be44300e7bf11d5af427e568388a9a746ce58e6c09babd65f6cf7dbec9520be6c9d92c7a4724c0892e044c38a9e2ce3a

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\nss3.dll

Filesize
834KB

MD5
9721a913f9a997a62c532d72ed3e7b8d

SHA1
2e1f33ec48938eab775f6775e4de93150b39b46d

SHA256
4515d073983b96bd48d2601fb22646d72aa56aec163cb172e6d06dd55b8a9e80

SHA512
7363b2192a3b0b5f946c14983b197315632907790871dd795b2d995d8cf924d9d3ad7af2c3b465b70f5bb110ba8aaef1412d2cc33bedaeca8c64e2a523678ad7

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\nssutil3.dll

Filesize
132KB

MD5
08b59a1793e8cd6fb085271650f8b5d0

SHA1
3182956535052ab496bc92f59167a7e114752b1e

SHA256
f0c14914986be4dc13a72fbe509db10a4c24c55e545471d1e4dde2c1d4ca03a1

SHA512
e2526879a4904f9e96b5f9422a088bfc4811f5ed3567fd0ad4021c10e6b796df10c61734cf59a2b2b36151fb1451660283284f97d7ff95eb3b78d6340f1cd136

Download Submit
C:\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\smime3.dll

Filesize
129KB

MD5
88f553be556ae62c59b3a3fbea81987e

SHA1
166abd59cdf04380b939c3d216b514cbe09735f8

SHA256
741bf85f9011be7f57df51a409b9b43b45bed0329d14cedc05d0f84e60c66006

SHA512
d27e0ea06245782960bcffd41f9afbd9a7fe3bbb43f15eddbfa083568b21cc6dd15c86686fb597a0bf05d2bb4e76332eb7f28aba82e6a3695423f1458fb924c4

Download Submit
\??\c:\users\admin\appdata\local\tempfolder\gekqobbujlub\aamuhkdab.dat

Filesize
1.2MB

MD5
6b2424cc8c5bcbcc43a530731d109898

SHA1
ff22a1152ae0ab80bf9fb115c1a124529aa2ac4b

SHA256
c7a43ea8266fee04d0624efa4439d0b0fe2ce9b997951090a4490ec8d37162ae

SHA512
4c3300326e7b1954712d83331d110a78de51c2209ee02fda873f01bc57a95b3718363eb29df9baf4d96bb1e04f3840c3c9e1b35683430056fd2dcb91a61483ff

Download Submit
\Users\Admin\AppData\Local\Temp\nsyC72.tmp\StdUtils.dll

Filesize
14KB

MD5
21010df9bc37daffcc0b5ae190381d85

SHA1
a8ba022aafc1233894db29e40e569dfc8b280eb9

SHA256
0ebd62de633fa108cf18139be6778fa560680f9f8a755e41c6ab544ab8db5c16

SHA512
95d3dbba6eac144260d5fcc7fcd5fb3afcb59ae62bd2eafc5a1d2190e9b44f8e125290d62fef82ad8799d0072997c57b2fa8a643aba554d0a82bbd3f8eb1403e

Download Submit
\Users\Admin\AppData\Local\Temp\nsyC72.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\RyexhoIubem.exe

Filesize
97KB

MD5
2db7b52bfb4ff9d0067672f77e3996c3

SHA1
83589469e2eaa884c1740916569fabd91f49819e

SHA256
430c6b84be972cb04b0e91f739c8e47e7ff2508017de0cebd1fe28b0a05581eb

SHA512
db04b44f472f74fb98b4dec3b3db79c941f961c1afcea500becfddfae855ba34689cbc878b30e7963c5ff31472309d9d41dab5be0a872808a4bb158693856516

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libnspr4.dll

Filesize
288KB

MD5
74485152d7f2c06fe413f48c7da4ff33

SHA1
a07c30fedc80e5f4c2cc0be5202d64f51b015b44

SHA256
3c019cb209ba4f01015ffbb628d988735d2c5d9805abd7dd4dab441ea82eb688

SHA512
43b3b3bd5d5f3afd845cc79d68e942836f95f708eac96cd84d09b774d8f92f772b2353a273185b6be336603b5b283a486756e95ff26bb1ecd4fe84667cbe6f52

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libplc4.dll

Filesize
47KB

MD5
08bacf2967fd8ea468c69f6e8d31b914

SHA1
eec97e847be6303013e468979b861ff74d4279ed

SHA256
2f143cac2efdc21b98620338c6f0404dfce812ee5741960ff68671ed0b0f3a9a

SHA512
2550e9481d2604b9c62b97ede184af4a8b2db1333b6707e01bc67b3699f72b0b764a238c86801d4457007e31977a181007f67c300f7c47899d4a771d05c2e97a

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\libplds4.dll

Filesize
45KB

MD5
56c1c79274ef5728b1f50986a5a8f22e

SHA1
32f67170194ce27736e564b5328dbab6c4be33b3

SHA256
8720171993fc29c517a8124b8235c2c5d71b0ae4c236685ba202088326d780de

SHA512
6198edad58ffbb9109c827de704a6d67be44300e7bf11d5af427e568388a9a746ce58e6c09babd65f6cf7dbec9520be6c9d92c7a4724c0892e044c38a9e2ce3a

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\nss3.dll

Filesize
834KB

MD5
9721a913f9a997a62c532d72ed3e7b8d

SHA1
2e1f33ec48938eab775f6775e4de93150b39b46d

SHA256
4515d073983b96bd48d2601fb22646d72aa56aec163cb172e6d06dd55b8a9e80

SHA512
7363b2192a3b0b5f946c14983b197315632907790871dd795b2d995d8cf924d9d3ad7af2c3b465b70f5bb110ba8aaef1412d2cc33bedaeca8c64e2a523678ad7

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\nssutil3.dll

Filesize
132KB

MD5
08b59a1793e8cd6fb085271650f8b5d0

SHA1
3182956535052ab496bc92f59167a7e114752b1e

SHA256
f0c14914986be4dc13a72fbe509db10a4c24c55e545471d1e4dde2c1d4ca03a1

SHA512
e2526879a4904f9e96b5f9422a088bfc4811f5ed3567fd0ad4021c10e6b796df10c61734cf59a2b2b36151fb1451660283284f97d7ff95eb3b78d6340f1cd136

Download Submit
\Users\Admin\AppData\Local\Tempfolder\GekqobBujlub\smime3.dll

Filesize
129KB

MD5
88f553be556ae62c59b3a3fbea81987e

SHA1
166abd59cdf04380b939c3d216b514cbe09735f8

SHA256
741bf85f9011be7f57df51a409b9b43b45bed0329d14cedc05d0f84e60c66006

SHA512
d27e0ea06245782960bcffd41f9afbd9a7fe3bbb43f15eddbfa083568b21cc6dd15c86686fb597a0bf05d2bb4e76332eb7f28aba82e6a3695423f1458fb924c4

Download Submit
memory/908-74-0x0000000010000000-0x0000000010136000-memory.dmp

Filesize
1.2MB

Download
memory/1596-54-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads