masslogger | 4fb747b6c79d7e978c661fd3479124e92c5be6ba644c370dd4acd633e3d5fdf7

Analysis

max time kernel
149s
max time network
170s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 00:31

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General

Target

OOCS DI 20002876.exe
Size

1.4MB
MD5

27f8ea7f5eca57a8ad069629b50f942e
SHA1

2ac3264d1221cf22de0f38690dfb4bbdd2a694a1
SHA256

83b37e01d5d48f6a7bc0557863a4e91e84dfc8a1e721850ea265f78cbd6d275a
SHA512

e4dfd9a5aaab3713ca06a7d8808b3ff06c09c6c3fb101cab5d87af46a830a6447bfb66396c911e4ef3ae5fca96c60c25db633ec7f3ae09ccea22808df05d8e35

Score

10^/10

masslogger agilenet spyware stealer

Malware Config

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 38 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1728-54-0x0000000000990000-0x0000000000B02000-memory.dmp	family_masslogger
C:\Users\Admin\AppData\Roaming\chu.exe	family_masslogger
C:\Users\Admin\AppData\Roaming\chu.exe	family_masslogger
\Users\Admin\AppData\Roaming\chu.exe	family_masslogger
behavioral1/memory/948-63-0x0000000000930000-0x0000000000AA2000-memory.dmp	family_masslogger
behavioral1/memory/608-73-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-72-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-74-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-75-0x00000000004ACB6E-mapping.dmp	family_masslogger
behavioral1/memory/608-80-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-78-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-82-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-84-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-86-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-88-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-94-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-92-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-90-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-98-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-100-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-96-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-104-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-102-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-108-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-106-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-110-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-114-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-112-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-116-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-118-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-120-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-122-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-124-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-126-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-128-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-130-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-132-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral1/memory/608-134-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger

Executes dropped EXE 2 IoCs

Processes:

chu.exeInstallUtil.exe

pid process

948 chu.exe
608 InstallUtil.exe

pid	process
948	chu.exe
608	InstallUtil.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

InstallUtil.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	InstallUtil.exe

Loads dropped DLL 2 IoCs

Processes:

OOCS DI 20002876.exechu.exe

pid process

1728 OOCS DI 20002876.exe
948 chu.exe

pid	process
1728	OOCS DI 20002876.exe
948	chu.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/1728-56-0x00000000003F0000-0x00000000003FA000-memory.dmp	agile_net

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

chu.exe

description pid process target process

PID 948 set thread context of 608 948 chu.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

OOCS DI 20002876.exechu.exe

pid process

1728 OOCS DI 20002876.exe
1728 OOCS DI 20002876.exe
948 chu.exe
948 chu.exe
948 chu.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

OOCS DI 20002876.exechu.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1728 OOCS DI 20002876.exe
Token: SeDebugPrivilege 948 chu.exe
Token: SeDebugPrivilege 608 InstallUtil.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 948 set thread context of 608	948	chu.exe	InstallUtil.exe

pid	process
1728	OOCS DI 20002876.exe
1728	OOCS DI 20002876.exe
948	chu.exe
948	chu.exe
948	chu.exe

description	pid	process
Token: SeDebugPrivilege	1728	OOCS DI 20002876.exe
Token: SeDebugPrivilege	948	chu.exe
Token: SeDebugPrivilege	608	InstallUtil.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

OOCS DI 20002876.execmd.exechu.execmd.exe

description	pid	process	target process
PID 1728 wrote to memory of 1692	1728	OOCS DI 20002876.exe	cmd.exe
PID 1728 wrote to memory of 1692	1728	OOCS DI 20002876.exe	cmd.exe
PID 1728 wrote to memory of 1692	1728	OOCS DI 20002876.exe	cmd.exe
PID 1728 wrote to memory of 1692	1728	OOCS DI 20002876.exe	cmd.exe
PID 1692 wrote to memory of 1176	1692	cmd.exe	reg.exe
PID 1692 wrote to memory of 1176	1692	cmd.exe	reg.exe
PID 1692 wrote to memory of 1176	1692	cmd.exe	reg.exe
PID 1692 wrote to memory of 1176	1692	cmd.exe	reg.exe
PID 1728 wrote to memory of 948	1728	OOCS DI 20002876.exe	chu.exe
PID 1728 wrote to memory of 948	1728	OOCS DI 20002876.exe	chu.exe
PID 1728 wrote to memory of 948	1728	OOCS DI 20002876.exe	chu.exe
PID 1728 wrote to memory of 948	1728	OOCS DI 20002876.exe	chu.exe
PID 948 wrote to memory of 340	948	chu.exe	cmd.exe
PID 948 wrote to memory of 340	948	chu.exe	cmd.exe
PID 948 wrote to memory of 340	948	chu.exe	cmd.exe
PID 948 wrote to memory of 340	948	chu.exe	cmd.exe
PID 340 wrote to memory of 832	340	cmd.exe	reg.exe
PID 340 wrote to memory of 832	340	cmd.exe	reg.exe
PID 340 wrote to memory of 832	340	cmd.exe	reg.exe
PID 340 wrote to memory of 832	340	cmd.exe	reg.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe
PID 948 wrote to memory of 608	948	chu.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\OOCS DI 20002876.exe
"C:\Users\Admin\AppData\Local\Temp\OOCS DI 20002876.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"
3⤵
PID:1176

C:\Users\Admin\AppData\Roaming\chu.exe
"C:\Users\Admin\AppData\Roaming\chu.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:340

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\chu.exe"
4⤵
PID:832

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
PID:608

Network

MITRE ATT&CK Enterprise v6

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\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Roaming\chu.exe

Filesize
1.4MB

MD5
27f8ea7f5eca57a8ad069629b50f942e

SHA1
2ac3264d1221cf22de0f38690dfb4bbdd2a694a1

SHA256
83b37e01d5d48f6a7bc0557863a4e91e84dfc8a1e721850ea265f78cbd6d275a

SHA512
e4dfd9a5aaab3713ca06a7d8808b3ff06c09c6c3fb101cab5d87af46a830a6447bfb66396c911e4ef3ae5fca96c60c25db633ec7f3ae09ccea22808df05d8e35

Download Submit
C:\Users\Admin\AppData\Roaming\chu.exe

Filesize
1.4MB

MD5
27f8ea7f5eca57a8ad069629b50f942e

SHA1
2ac3264d1221cf22de0f38690dfb4bbdd2a694a1

SHA256
83b37e01d5d48f6a7bc0557863a4e91e84dfc8a1e721850ea265f78cbd6d275a

SHA512
e4dfd9a5aaab3713ca06a7d8808b3ff06c09c6c3fb101cab5d87af46a830a6447bfb66396c911e4ef3ae5fca96c60c25db633ec7f3ae09ccea22808df05d8e35

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\chu.exe

Filesize
1.4MB

MD5
27f8ea7f5eca57a8ad069629b50f942e

SHA1
2ac3264d1221cf22de0f38690dfb4bbdd2a694a1

SHA256
83b37e01d5d48f6a7bc0557863a4e91e84dfc8a1e721850ea265f78cbd6d275a

SHA512
e4dfd9a5aaab3713ca06a7d8808b3ff06c09c6c3fb101cab5d87af46a830a6447bfb66396c911e4ef3ae5fca96c60c25db633ec7f3ae09ccea22808df05d8e35

Download Submit
memory/340-64-0x0000000000000000-mapping.dmp

Download
memory/608-86-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-90-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-595-0x00000000004E0000-0x0000000000524000-memory.dmp

Filesize
272KB

Download
memory/608-134-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-132-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-130-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-128-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-126-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-73-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-124-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-75-0x00000000004ACB6E-mapping.dmp

Download
memory/608-80-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-78-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-82-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-84-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-122-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-88-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-94-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-92-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-120-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-98-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-100-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-96-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-104-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-102-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-108-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-106-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-110-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-114-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-112-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-116-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/608-118-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/832-65-0x0000000000000000-mapping.dmp

Download
memory/948-60-0x0000000000000000-mapping.dmp

Download
memory/948-66-0x0000000000920000-0x000000000092A000-memory.dmp

Filesize
40KB

Download
memory/948-63-0x0000000000930000-0x0000000000AA2000-memory.dmp

Filesize
1.4MB

Download
memory/1176-58-0x0000000000000000-mapping.dmp

Download
memory/1692-57-0x0000000000000000-mapping.dmp

Download
memory/1728-54-0x0000000000990000-0x0000000000B02000-memory.dmp

Filesize
1.4MB

Download
memory/1728-55-0x00000000002F0000-0x000000000030E000-memory.dmp

Filesize
120KB

Download
memory/1728-56-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download