hxxps://egrnet[.]com[.]br/cgi/rand_string_lowercase6pcrand_string_lowercase6/Ym9yYXQubnlAc2JpbGhiYW5rLmNvbS5raA==

Analysis

max time kernel
43s
max time network
40s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2023, 01:26

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General

Target

https://egrnet.com.br/cgi/rand_string_lowercase6pcrand_string_lowercase6/Ym9yYXQubnlAc2JpbGhiYW5rLmNvbS5raA==

Score

1^/10

Malware Config

Signatures

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	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	chrome.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133450036219779573"	chrome.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4372	chrome.exe
4372	chrome.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe
Token: SeShutdownPrivilege	4372	chrome.exe
Token: SeCreatePagefilePrivilege	4372	chrome.exe

Suspicious use of FindShellTrayWindow 26 IoCs

pid	Process
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe
4372	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 1700	4372	chrome.exe	61
PID 4372 wrote to memory of 1700	4372	chrome.exe	61
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 1040	4372	chrome.exe	86
PID 4372 wrote to memory of 3028	4372	chrome.exe	87
PID 4372 wrote to memory of 3028	4372	chrome.exe	87
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88
PID 4372 wrote to memory of 1108	4372	chrome.exe	88

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://egrnet.com.br/cgi/rand_string_lowercase6pcrand_string_lowercase6/Ym9yYXQubnlAc2JpbGhiYW5rLmNvbS5raA==
1⤵
- Enumerates system info in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffce7e79758,0x7ffce7e79768,0x7ffce7e79778
  2⤵
  PID:1700
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1624 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:2
  2⤵
  PID:1040
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2120 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:8
  2⤵
  PID:3028
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2240 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:8
  2⤵
  PID:1108
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2992 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:4984
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2972 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:4780
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4812 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:1968
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=4976 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:4148
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --mojo-platform-channel-handle=5040 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:3372
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5172 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:8
  2⤵
  PID:408
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5268 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:8
  2⤵
  PID:4528
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=3856 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:1344
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --mojo-platform-channel-handle=5396 --field-trial-handle=1888,i,12258653209856474070,16739519115170099152,131072 /prefetch:1
  2⤵
  PID:2300

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:3100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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\Google\Chrome\User Data\Default\Preferences

Filesize
6KB

MD5
c9a678997f7cff95b4d533c682228fe0

SHA1
fb6b2a04ecad40c1e68597164c887ac07c4cb328

SHA256
774dde5c879160f9bc626ecf809a65f09582ce00a0d64745cfeb9e9ca74f51e8

SHA512
2e2c283a5fe44195e670191d8daa3279f415099bc86bb72e6c2e8e7f80c3c603b6c776dea6067a4282a5d84f72a06a0fb6065a8a9b4882b1b00a0b1a85a16d7f

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

Filesize
5KB

MD5
09b86e11304c2b108552c936eac681be

SHA1
c3b09d74ef2d556c7347a6c651619c91e692a174

SHA256
ddf5aec71c623c1715b5473314c29ab34ffc7b77b2561c5ee86907e7fcee88a5

SHA512
b79221f9d27f0a231765f93a4f4c11a8b3b09c245caf014f39666715d4ebc9c33a678fccc19c9319bf448da2031bea8932daf3ddf164c62e779b0db8fad628a5

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

Filesize
109KB

MD5
f8c9a0aa85b09f905994062119da9c9b

SHA1
c515b4b89af6b76e161e1fc0591343eae6fb4aab

SHA256
5ba350f2dcd2e382f72df8d7eaa85425b79c806a3107da5d89ed2eea1b5d1c17

SHA512
4787bdad3c5da66de76194b6a57381ef76ccb26461c7ac1d2eee1481f99d2050f9775369a48567e623ee2ce4a36a6ca6362d5866f5c6ce164768c09bd136fae5

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

Filesize
2B

MD5
99914b932bd37a50b983c5e7c90ae93b

SHA1
bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

SHA256
44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

SHA512
27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

Download Submit