hxxp://2023-letter-of-assessment[.]com/login

Analysis

max time kernel
146s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2023 03:08

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General

Target

http://2023-letter-of-assessment.com/login

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
5104	msedge.exe
5104	msedge.exe
944	msedge.exe
944	msedge.exe
4896	identity_helper.exe
4896	identity_helper.exe
3396	msedge.exe
3396	msedge.exe
3396	msedge.exe
3396	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 10 IoCs

pid	Process
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe
944	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 4172	944	msedge.exe	84
PID 944 wrote to memory of 4172	944	msedge.exe	84
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 2444	944	msedge.exe	86
PID 944 wrote to memory of 5104	944	msedge.exe	85
PID 944 wrote to memory of 5104	944	msedge.exe	85
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87
PID 944 wrote to memory of 4680	944	msedge.exe	87

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://2023-letter-of-assessment.com/login
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:944
- 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,0x100,0x104,0xd8,0x108,0x7ffd00d046f8,0x7ffd00d04708,0x7ffd00d04718
  2⤵
  PID:4172
- 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=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2256 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:5104
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1840 /prefetch:2
  2⤵
  PID:2444
- 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=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2900 /prefetch:8
  2⤵
  PID:4680
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=3132 /prefetch:1
  2⤵
  PID:4284
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=3504 /prefetch:1
  2⤵
  PID:4752
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4868 /prefetch:1
  2⤵
  PID:1820
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=3780 /prefetch:1
  2⤵
  PID:4468
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5384 /prefetch:1
  2⤵
  PID:876
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5396 /prefetch:1
  2⤵
  PID:4392
- 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=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5160 /prefetch:8
  2⤵
  PID:4900
- 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=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5160 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4896
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4144 /prefetch:1
  2⤵
  PID:4140
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5640 /prefetch:1
  2⤵
  PID:4704
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2096 /prefetch:1
  2⤵
  PID:3196
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4276 /prefetch:1
  2⤵
  PID:4792
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2196,16658200852424955956,12531301057078113043,131072 --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=5512 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3396

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1520

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5028

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\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
f4787679d96bf7263d9a34ce31dea7e4

SHA1
ebbade52b0a07d888ae0221ad89081902e6e7f1b

SHA256
bfcadaffd49f5351acf68b8249b32270424bc2459125818492cd3224662a9a87

SHA512
de3f3d1cd602bddb664bd0d2aecb661204dd239b278b1f03d6b9dca6f3d03bd3041ac42f4382f5edf5b310b17ff9ecddff59f16729e8c095625040a364252307

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

Filesize
111B

MD5
285252a2f6327d41eab203dc2f402c67

SHA1
acedb7ba5fbc3ce914a8bf386a6f72ca7baa33c6

SHA256
5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026

SHA512
11ce7cb484fee66894e63c31db0d6b7ef66ad0327d4e7e2eb85f3bcc2e836a3a522c68d681e84542e471e54f765e091efe1ee4065641b0299b15613eb32dcc0d

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

Filesize
5KB

MD5
918e621fe453ceb28413ce3d0e8553dd

SHA1
59549aa4152abc01dbd9a0216cfc90efca038aaa

SHA256
1e357596f90347d3f513af323beb13a77ab1aec77e5414657b53a8948e788c48

SHA512
d55952ab9b18c7f5bf47096812aade145bb2c9b2597b92f1a32498958978bee4b72d81475a367a7c86d1b6dada3ff25609d8d5fd6e56a5695993221807c7f04d

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

Filesize
5KB

MD5
dbf84834e41b65faec7dba5a66f63f12

SHA1
2d74164814fe8580ee0651bd7bbbf97f37d17453

SHA256
d0e7ddb9efa143feeb6df96f3d162aa710b694dc823789de50cfa9d6cec4a9c7

SHA512
2eaad6e7181141b3ef9f8e93dfea30b7d202dd240a88336324c11327197949cdb2e62778600f3dbfab398257fb28fbc93f16d0432020eabe2095a6270241b104

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

Filesize
24KB

MD5
3a748249c8b0e04e77ad0d6723e564ff

SHA1
5c4cc0e5453c13ffc91f259ccb36acfb3d3fa729

SHA256
f98f5543c33c0b85b191bb85718ee7845982275130da1f09e904d220f1c6ceed

SHA512
53254db3efd9c075e4f24a915e0963563ce4df26d4771925199a605cd111ae5025a65f778b4d4ed8a9b3e83b558066cd314f37b84115d4d24c58207760174af2

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
10KB

MD5
2c57717b4e9a34ae47e2d1882cf8701f

SHA1
1fc3caf43bfb21f7b06bf4914dd34ce9b3bf144e

SHA256
90e3597d9b368c36207fa90e6f08038b24edfd48be71d3949f9db409060a5b00

SHA512
ffb6dd123c2d148be23abfe2c6c395c3971d53112bbaaa93a2cffdd6e1c12293dc34dd4f539f9513b593e2812d13519000611114072fb1333dd21891c25748cc

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

Filesize
10KB

MD5
5ea2d6996464421750c21460a33505f6

SHA1
f74781ab74059643172e819a26a422e24c0707a5

SHA256
b8d1c6d013845ec3c63661308891f7528b73d9937651d86097ecf334a7d66164

SHA512
1ce84206995f6ad3d5593a32cb67ba5e50f080727d9dcf7e5e8ca3307a08c43add11ed7352881eb0d387c15edbcc8145586ea3a9d48d833dda2c2f9000605000

Download Submit