94a5ce690a94c018e35d0562541520f43535cc393d5e0da746e524e04d086a8d

General

Target

VastGen.exe
Size

39.3MB
MD5

9c5ff43c0f29ccd9e0a5682565e6e45d
SHA1

800574f0a4dfadcba94340c3d64a3e00fdd3ddce
SHA256

edb0f506950965f4af08ce445f137360129f061624a96424ecc19e70c20c3fb8
SHA512

f05a09e26dbe21a16cd33fde937b24dfccc820273886bfee5dcdec033588d6d576fa1eedceb673aa2aad0177281bff737a90ede22d814cd8132835b964ba3b55
SSDEEP

786432:DQtsgYVHiRyc0KaU2j6+s7LWB75zuk2F5F0nC9/JqrYEap9WMNmBHqeU:DQtCVHLc0KaU2qHWB75ikKzZ9p3p9WMV

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

VastGen.exe

pid process

2532 VastGen.exe

pid	process
2532	VastGen.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

chrome.exe

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

chrome.exe

pid process

1964 chrome.exe
1964 chrome.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

chrome.exe

description	pid	process
Token: SeShutdownPrivilege	1964	chrome.exe
Token: SeShutdownPrivilege	1964	chrome.exe
Token: SeShutdownPrivilege	1964	chrome.exe
Token: SeShutdownPrivilege	1964	chrome.exe
Token: SeShutdownPrivilege	1964	chrome.exe
Token: SeShutdownPrivilege	1964	chrome.exe

Suspicious use of FindShellTrayWindow 35 IoCs

Processes:

chrome.exe

pid	process
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

Processes:

chrome.exe

pid	process
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe
1964	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

VastGen.exechrome.exe

description	pid	process	target process
PID 1680 wrote to memory of 2532	1680	VastGen.exe	VastGen.exe
PID 1680 wrote to memory of 2532	1680	VastGen.exe	VastGen.exe
PID 1680 wrote to memory of 2532	1680	VastGen.exe	VastGen.exe
PID 1964 wrote to memory of 1960	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1960	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1960	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 2036	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1744	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1744	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1744	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe
PID 1964 wrote to memory of 1372	1964	chrome.exe	chrome.exe

C:\Users\Admin\AppData\Local\Temp\VastGen.exe
"C:\Users\Admin\AppData\Local\Temp\VastGen.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1680

C:\Users\Admin\AppData\Local\Temp\VastGen.exe
"C:\Users\Admin\AppData\Local\Temp\VastGen.exe"
2⤵
- Loads dropped DLL
PID:2532

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1964

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=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6849758,0x7fef6849768,0x7fef6849778
2⤵
PID:1960

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=1172 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:2
2⤵
PID:2036

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=1408 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:8
2⤵
PID:1744

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=1620 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:8
2⤵
PID:1372

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=2276 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:1
2⤵
PID:1036

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=2292 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:1
2⤵
PID:2872

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1596 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:2
2⤵
PID:2672

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 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1168 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:1
2⤵
PID:3052

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3456 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:8
2⤵
PID:2560

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3588 --field-trial-handle=1492,i,3736144105976053808,10582026529243387135,131072 /prefetch:8
2⤵
PID:2584

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:2084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\8cbbee21-55de-4c73-b9f7-11efc1e6095d.tmp
Filesize
282KB

MD5
34d3f8de7f404a901b9fc2d09e329ba8

SHA1
ef574846e064872d531917154865228c6978c121

SHA256
f49200bae94cda8e3e475819df4c241702a01020efb2bac62d32ec0969f5e185

SHA512
09b843e6d4dcd2021774d543b0938c3091e16b3a17d9946eda8204133fddd13ff95b9a8f2ab18655ea11ffc3fcd60db8d6d62d6dd7f1c3194131e4c4d85fd229

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
Filesize
264KB

MD5
f50f89a0a91564d0b8a211f8921aa7de

SHA1
112403a17dd69d5b9018b8cede023cb3b54eab7d

SHA256
b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

SHA512
bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp
Filesize
16B

MD5
18e723571b00fb1694a3bad6c78e4054

SHA1
afcc0ef32d46fe59e0483f9a3c891d3034d12f32

SHA256
8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

SHA512
43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
Filesize
140KB

MD5
732f37a0cccad3f74c8e845a364d1f67

SHA1
bc70b6dc50a01fb5e12927cdac10eb4a385309f8

SHA256
b11040a3c6612ade5e8d9e433667b49598b4ef7d7bf6024e4328f8b0545b213f

SHA512
532f245e8a27692ac4ab4850fa5fdd1816c5729a5df226797081069d0f5ada37e1516e473dd31cd6b0a5628f1ae3a7acde7317c9c5821c653b45ff53c6197f51

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI16802\python311.dll
Filesize
5.5MB

MD5
58e01abc9c9b5c885635180ed104fe95

SHA1
1c2f7216b125539d63bd111a7aba615c69deb8ba

SHA256
de1b95d2e951fc048c84684bc7df4346138910544ee335b61fc8e65f360c3837

SHA512
cd32c77191309d99aeed47699501b357b35669123f0dd70ed97c3791a009d1855ab27162db24a4bd9e719b68ee3b0539ee6db88e71abb9a2d4d629f87bc2c081

Download Submit
\??\pipe\crashpad_1964_TKBDMFGGSVIRGCFQ
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads