hxxps://calcplex[.]com/downloads/

Resubmissions

21/05/2024, 01:30

240521-bwt29adg86 1

21/05/2024, 01:28

240521-bvyn2sdg65 1

Analysis

max time kernel
1680s
max time network
1685s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 01:28

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General

Target

https://calcplex.com/downloads/

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

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4204	msedge.exe
4204	msedge.exe
4968	msedge.exe
4968	msedge.exe
1584	identity_helper.exe
1584	identity_helper.exe
3380	msedge.exe
3380	msedge.exe
3380	msedge.exe
3380	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs

pid	Process
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe
4968	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 1904	4968	msedge.exe	81
PID 4968 wrote to memory of 1904	4968	msedge.exe	81
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 2664	4968	msedge.exe	85
PID 4968 wrote to memory of 4204	4968	msedge.exe	86
PID 4968 wrote to memory of 4204	4968	msedge.exe	86
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87
PID 4968 wrote to memory of 3948	4968	msedge.exe	87

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://calcplex.com/downloads/
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffc840f46f8,0x7ffc840f4708,0x7ffc840f4718
  2⤵
  PID:1904
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2212 /prefetch:2
  2⤵
  PID:2664
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2268 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4204
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2880 /prefetch:8
  2⤵
  PID:3948
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3272 /prefetch:1
  2⤵
  PID:4880
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3312 /prefetch:1
  2⤵
  PID:4020
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
  2⤵
  PID:3184
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1584
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5456 /prefetch:1
  2⤵
  PID:2288
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5472 /prefetch:1
  2⤵
  PID:3016
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5504 /prefetch:1
  2⤵
  PID:2604
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3440 /prefetch:1
  2⤵
  PID:2840
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2084,11610327333314215419,292348656287340273,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=5476 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3380

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5084

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4544

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506

Filesize
330B

MD5
edce7151c2e6be7d5272109a02e9ce06

SHA1
b6b7c9ceb597fca4f5b2f9b35de2e6aaf1a37b82

SHA256
93d60daac2f0a95132286ec4e53f51e3c3c79ee6b6f3e9e76206fb08bef9bf17

SHA512
7d70c97e6679a7fd14ad85647564dd115d7c27634f666667cea945e5a1423396e2dd2008f14044e8b14771db8b04368412c93a49a16c078c850192b093b5b1b3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
2daa93382bba07cbc40af372d30ec576

SHA1
c5e709dc3e2e4df2ff841fbde3e30170e7428a94

SHA256
1826d2a57b1938c148bf212a47d947ed1bfb26cfc55868931f843ee438117f30

SHA512
65635cb59c81548a9ef8fdb0942331e7f3cd0c30ce1d4dba48aed72dbb27b06511a55d2aeaadfadbbb4b7cb4b2e2772bbabba9603b3f7d9c8b9e4a7fbf3d6b6b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
ecdc2754d7d2ae862272153aa9b9ca6e

SHA1
c19bed1c6e1c998b9fa93298639ad7961339147d

SHA256
a13d791473f836edcab0e93451ce7b7182efbbc54261b2b5644d319e047a00a7

SHA512
cd4fb81317d540f8b15f1495a381bb6f0f129b8923a7c06e4b5cf777d2625c30304aee6cc68aa20479e08d84e5030b43fbe93e479602400334dfdd7297f702f2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

Filesize
624B

MD5
98ff6a3cc91288a1b4099190ea40cbf8

SHA1
60c1dc64c9664ef116c2af4c7513014d1d4b10c6

SHA256
34225fd28cf5b799f23869a25ab362c3b5d5e3780853a9ffaafef0c4704cf17f

SHA512
150e1918c6c007e072989cb9252feb42e803b9073ccd5177b925ce88ad6d0d6993cc3392c8a86dd7d69c529e116cb58d0e679cc32fa85708f7b416bed8dc4fec

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

Filesize
919B

MD5
54cfc25069da2369ec77206fdfa9dd07

SHA1
0854123daf3a07697605657c36164d2123e8d3c1

SHA256
d1d1d2354906204f56b8b8bbbbc08051b936ea5391d28cf8c8ad8ead26423449

SHA512
13288f72f2e53670acdf6edd36c3f147c5557418da95b205d81b750e3427ded48af758d0cd0526ecbb45aab868c09117b9d88387de3abc609eea9f7f5be01028

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
84ccf8981e8d76f131de663bd0be9e05

SHA1
993b269a7220db41a9d45f65776930af1bf3d315

SHA256
f4d1ca3a3e2e70c96e4e75c9bad82204b0a98174e6696fff11ba39923172443c

SHA512
fd0370f4912986edd156752809cdb7bca314d519423fe83fb78b43b06cdcc81b82598dcb01f9956d93c3b959cf29dd57c1e4370cf4b8bd54087bcb5af265ca73

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
7750e916f714a43808ebf0058f3005d9

SHA1
40cec8fc0aba83e879c35e7f5ec2d955d9fa5b48

SHA256
ce6b6bb7c991063d6aad00ce75245c0f9f7ee3e140bb4b9602eeb6fcaa62d67b

SHA512
a5c03d9fab77f039c83cfbc91cd805d11b2019ad9b5758e7cda5722fcb8c558f50eb283db3d0e479c680f8772aefd76a7d648cfbb6e965494a017f776c472ab8

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
6908fd2b1c2da14995a80d0b78704af7

SHA1
311a43be6c59b04ec6215cbe882d6d33ea4c1b0f

SHA256
ef9e941a71f9be963ee1b904e2b3623c4ac745558ad320e47cc4ccb5eb1e21c8

SHA512
b2617c3b8ceb08ac4fa600a989b851b1faa67cfff14fc3c301fabbe0007ea782181baec0c5d98c628782810dac44c296d7f914b4400847537da6d0f473afc4c9

Download Submit