hxxps://cowork-storage-public-cdn[.]lx[.]netease[.]com/sign/2023/12/13/e1a1e1e815874c8e87cabda983b215ff[.]png

Analysis

max time kernel
45s
max time network
128s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 20:07

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General

Target

https://cowork-storage-public-cdn.lx.netease.com/sign/2023/12/13/e1a1e1e815874c8e87cabda983b215ff.png

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1796	chrome.exe
1796	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe
Token: SeShutdownPrivilege	1796	chrome.exe

Suspicious use of FindShellTrayWindow 43 IoCs

pid	Process
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

pid	Process
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe
1796	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 2188	1796	chrome.exe	28
PID 1796 wrote to memory of 2188	1796	chrome.exe	28
PID 1796 wrote to memory of 2188	1796	chrome.exe	28
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2332	1796	chrome.exe	30
PID 1796 wrote to memory of 2804	1796	chrome.exe	31
PID 1796 wrote to memory of 2804	1796	chrome.exe	31
PID 1796 wrote to memory of 2804	1796	chrome.exe	31
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32
PID 1796 wrote to memory of 2600	1796	chrome.exe	32

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

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://cowork-storage-public-cdn.lx.netease.com/sign/2023/12/13/e1a1e1e815874c8e87cabda983b215ff.png
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:1796
- 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,0x7fef6f69758,0x7fef6f69768,0x7fef6f69778
  2⤵
  PID:2188
- 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=1164 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:2
  2⤵
  PID:2332
- 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=1508 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:8
  2⤵
  PID:2804
- 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=1604 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:8
  2⤵
  PID:2600
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --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=2268 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:1
  2⤵
  PID:2548
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2276 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:1
  2⤵
  PID:1940
- 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=1472 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:2
  2⤵
  PID:2784
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3696 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:8
  2⤵
  PID:1912
- 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=3692 --field-trial-handle=1368,i,15319002051731128467,2929489061639038027,131072 /prefetch:8
  2⤵
  PID:1720

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:2888

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\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\Preferences

Filesize
4KB

MD5
8ef97b8399da557bf7115fc76cc49ba7

SHA1
bf3607255919f1a65b0176c4f49288f52ed15652

SHA256
745dab02108bcb5baccb59ebecba13e6eae55456b12ae769d1e951dd097219e4

SHA512
ae1de036b65b9dada5842799ddebf19b4fd80615c538146422a80f038ae9465e31c946110010cf5bdfdfd8c693027bde3e4982a3336f9f160727afd844a5d2f3

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

Filesize
4KB

MD5
ea867d199f0df87423f711ac9e70f573

SHA1
707cc116f2b5eb081c692a56147f2a1f1b0409fe

SHA256
e69b96a64cb1609f3093d8820a3a229fd16894af4612fe25c135bf6cdf49fcdd

SHA512
af30e05dc3f95bf276f929348ab9e7b0a5c06ac0ef17080ea427a0a14ec419254f0c75fb6e7e2967132c7106d2e816cfb9d403bb4f84433689ba4681cb417567

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\Temp\Cab4961.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4983.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Users\Admin\Downloads\sign_2023_12_13_e1a1e1e815874c8e87cabda983b215ff.png.crdownload

Filesize
7.1MB

MD5
1e3bc111ab30bdecdf2d0c98543cc2f0

SHA1
15eeeb2e9df968c672d085e63196259705ad825b

SHA256
5df1c9c58ea19616b9a042602e525bb966144089e67f4ee8fed6438a785ff827

SHA512
6d343ee0bd84c9b72126fcb2826e9a4dd3020284a3bf8c60c73746a71699a96e188d7b113d7ec564f63045437b77d3f8dec102dc04db7220cb9be5eb7f982b99

Download Submit