redline | f3f3e212e84f0c9c375aa5bc3d9de63c2ddc2b5704d784006067390abaae57b3

General

Target

toolspab2.exe
Size

334KB
MD5

c33f5b894962328a5167e37c51edecc3
SHA1

c91eb850ab475ff69b6869f30eabcb0fee887e71
SHA256

f3f3e212e84f0c9c375aa5bc3d9de63c2ddc2b5704d784006067390abaae57b3
SHA512

0e331f7f16312edd361cd3e238d92a01952524af1ad8e348731b4fbdb47ef86224b606b3c6a4f67511dceb5a30e77d7357ee9457e16ef99f86283432b04d4937

Score

10^/10

redline smokeloader backdoor discovery infostealer spyware stealer trojan

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://xacokuo8.top/

http://hajezey1.top/

rc4.i32

Signatures

RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3896-133-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/3896-134-0x0000000000418D06-mapping.dmp	family_redline

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

80E4.exe80E4.exe5FAC.exe5FAC.exe

pid process

4016 80E4.exe
2996 80E4.exe
3612 5FAC.exe
3896 5FAC.exe
Deletes itself 1 IoCs

Processes:

pid process

2540
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
4016	80E4.exe
2996	80E4.exe
3612	5FAC.exe
3896	5FAC.exe

pid	process
2540

Drops file in System32 directory 4 IoCs

Processes:

OfficeC2RClient.exe

description	ioc	process
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	OfficeC2RClient.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officec2rclient.exe.db	OfficeC2RClient.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officec2rclient.exe.db-wal	OfficeC2RClient.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officec2rclient.exe.db-shm	OfficeC2RClient.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

toolspab2.exe80E4.exe5FAC.exe

description	pid	process	target process
PID 1028 set thread context of 1312	1028	toolspab2.exe	toolspab2.exe
PID 4016 set thread context of 2996	4016	80E4.exe	80E4.exe
PID 3612 set thread context of 3896	3612	5FAC.exe	5FAC.exe

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

80E4.exetoolspab2.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	80E4.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	80E4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspab2.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspab2.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspab2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	80E4.exe

Modifies data under HKEY_USERS 22 IoCs

Processes:

OfficeC2RClient.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry	OfficeC2RClient.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor\ULSTagIds0 = "5804129,17110992,7202269,17110988,7153487,39965824,17962391,17962392,3702920,3462423,3700754,3965062,4297094,7153421,18716193,7153435,7202265,20502174,6308191,18407617"	OfficeC2RClient.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor\ULSCategoriesSeverities = "1329 10,1329 50,941 10,1329 15,941 15,941 6,1329 100,1329 6"	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\Overrides	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\officeclicktorun\Overrides	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\ExternalFeatureOverrides\officeclicktorun	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun\ConfigContextData	OfficeC2RClient.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "1"	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\TrustCenter\Experimentation	OfficeC2RClient.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun\Expires = "int64_t\|1635136743"	OfficeC2RClient.exe
Key deleted	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\FirstSession\officeclicktorun	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe\ULSMonitor	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\all\Overrides	OfficeC2RClient.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "2"	OfficeC2RClient.exe
Key deleted	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officec2rclient.exe	OfficeC2RClient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0	OfficeC2RClient.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

toolspab2.exe

pid	process
1312	toolspab2.exe
1312	toolspab2.exe
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540
2540

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2540
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

toolspab2.exe80E4.exe

pid process

1312 toolspab2.exe
2996 80E4.exe

pid	process
2540

Suspicious use of AdjustPrivilegeToken 21 IoCs

Processes:

5FAC.exe

description	pid	process
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeDebugPrivilege	3896	5FAC.exe
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540
Token: SeShutdownPrivilege	2540
Token: SeCreatePagefilePrivilege	2540

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

OfficeC2RClient.exe

pid process

2948 OfficeC2RClient.exe

pid	process
2948	OfficeC2RClient.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

toolspab2.exe80E4.exe5FAC.exe

description	pid	process	target process
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 1028 wrote to memory of 1312	1028	toolspab2.exe	toolspab2.exe
PID 2540 wrote to memory of 4016	2540		80E4.exe
PID 2540 wrote to memory of 4016	2540		80E4.exe
PID 2540 wrote to memory of 4016	2540		80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 4016 wrote to memory of 2996	4016	80E4.exe	80E4.exe
PID 2540 wrote to memory of 3612	2540		5FAC.exe
PID 2540 wrote to memory of 3612	2540		5FAC.exe
PID 2540 wrote to memory of 3612	2540		5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe
PID 3612 wrote to memory of 3896	3612	5FAC.exe	5FAC.exe

C:\Users\Admin\AppData\Local\Temp\toolspab2.exe
"C:\Users\Admin\AppData\Local\Temp\toolspab2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1028

C:\Users\Admin\AppData\Local\Temp\toolspab2.exe
"C:\Users\Admin\AppData\Local\Temp\toolspab2.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1312

C:\Users\Admin\AppData\Local\Temp\80E4.exe
C:\Users\Admin\AppData\Local\Temp\80E4.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4016

C:\Users\Admin\AppData\Local\Temp\80E4.exe
C:\Users\Admin\AppData\Local\Temp\80E4.exe
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2996

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /frequentupdate SCHEDULEDTASK displaylevel=False
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2948

C:\Users\Admin\AppData\Local\Temp\5FAC.exe
C:\Users\Admin\AppData\Local\Temp\5FAC.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3612

C:\Users\Admin\AppData\Local\Temp\5FAC.exe
C:\Users\Admin\AppData\Local\Temp\5FAC.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3896

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\5FAC.exe.log
MD5
605f809fab8c19729d39d075f7ffdb53

SHA1
c546f877c9bd53563174a90312a8337fdfc5fdd9

SHA256
6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

SHA512
82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\5FAC.exe
MD5
a9cf6b07b6ee36d4986bd67429634417

SHA1
5343ed7b750d6f4b4710380bbd14301936db982e

SHA256
56ea2e765364d6f517e434e8238c96fb0fffef20c8714cf55d41ab98163e66e5

SHA512
4e6a3cbfb3b80abc8f5e23c7142097a180154eec2fa0737378930bba26a14f7601bb8d2d748b2a188cc674656fdfff90d0d5843e23e8c3db8541f5a061fd8af7

Download Submit
C:\Users\Admin\AppData\Local\Temp\5FAC.exe
MD5
a9cf6b07b6ee36d4986bd67429634417

SHA1
5343ed7b750d6f4b4710380bbd14301936db982e

SHA256
56ea2e765364d6f517e434e8238c96fb0fffef20c8714cf55d41ab98163e66e5

SHA512
4e6a3cbfb3b80abc8f5e23c7142097a180154eec2fa0737378930bba26a14f7601bb8d2d748b2a188cc674656fdfff90d0d5843e23e8c3db8541f5a061fd8af7

Download Submit
C:\Users\Admin\AppData\Local\Temp\5FAC.exe
MD5
a9cf6b07b6ee36d4986bd67429634417

SHA1
5343ed7b750d6f4b4710380bbd14301936db982e

SHA256
56ea2e765364d6f517e434e8238c96fb0fffef20c8714cf55d41ab98163e66e5

SHA512
4e6a3cbfb3b80abc8f5e23c7142097a180154eec2fa0737378930bba26a14f7601bb8d2d748b2a188cc674656fdfff90d0d5843e23e8c3db8541f5a061fd8af7

Download Submit
C:\Users\Admin\AppData\Local\Temp\80E4.exe
MD5
661a32c0d713d6ee0d478904c088b2d3

SHA1
24875cfbea7f8b45af94e3bb1ba8fb4541b9fa11

SHA256
b6caee45c87c15b789975b63f5ee6edfb1be6c7ef8c5854c2decdfe501797fc0

SHA512
a1809692b3a8eba590357735c4d5c5cf2716af4c52103662326f02951820846b513604eda0902399cb461d8879208ae9cc0a653a9712ccf9cc4e73221449ccbe

Download Submit
C:\Users\Admin\AppData\Local\Temp\80E4.exe
MD5
661a32c0d713d6ee0d478904c088b2d3

SHA1
24875cfbea7f8b45af94e3bb1ba8fb4541b9fa11

SHA256
b6caee45c87c15b789975b63f5ee6edfb1be6c7ef8c5854c2decdfe501797fc0

SHA512
a1809692b3a8eba590357735c4d5c5cf2716af4c52103662326f02951820846b513604eda0902399cb461d8879208ae9cc0a653a9712ccf9cc4e73221449ccbe

Download Submit
C:\Users\Admin\AppData\Local\Temp\80E4.exe
MD5
661a32c0d713d6ee0d478904c088b2d3

SHA1
24875cfbea7f8b45af94e3bb1ba8fb4541b9fa11

SHA256
b6caee45c87c15b789975b63f5ee6edfb1be6c7ef8c5854c2decdfe501797fc0

SHA512
a1809692b3a8eba590357735c4d5c5cf2716af4c52103662326f02951820846b513604eda0902399cb461d8879208ae9cc0a653a9712ccf9cc4e73221449ccbe

Download Submit
memory/1028-116-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1028-115-0x0000000000B71000-0x0000000000B82000-memory.dmp

Filesize
68KB

Download
memory/1312-117-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1312-118-0x0000000000402E0C-mapping.dmp

Download
memory/2540-119-0x0000000000610000-0x0000000000626000-memory.dmp

Filesize
88KB

Download
memory/2540-127-0x0000000000720000-0x0000000000736000-memory.dmp

Filesize
88KB

Download
memory/2996-125-0x0000000000402E0C-mapping.dmp

Download
memory/3612-128-0x0000000000000000-mapping.dmp

Download
memory/3612-131-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/3612-136-0x00000000051E0000-0x00000000051E1000-memory.dmp

Filesize
4KB

Download
memory/3896-143-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

Filesize
4KB

Download
memory/3896-145-0x0000000005A00000-0x0000000005A01000-memory.dmp

Filesize
4KB

Download
memory/3896-133-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3896-139-0x0000000005290000-0x0000000005291000-memory.dmp

Filesize
4KB

Download
memory/3896-140-0x0000000004D10000-0x0000000004D11000-memory.dmp

Filesize
4KB

Download
memory/3896-141-0x0000000004E40000-0x0000000004E41000-memory.dmp

Filesize
4KB

Download
memory/3896-142-0x0000000004D70000-0x0000000004D71000-memory.dmp

Filesize
4KB

Download
memory/3896-153-0x0000000007130000-0x0000000007131000-memory.dmp

Filesize
4KB

Download
memory/3896-144-0x0000000004C80000-0x0000000005286000-memory.dmp

Filesize
6.0MB

Download
memory/3896-134-0x0000000000418D06-mapping.dmp

Download
memory/3896-146-0x0000000005AB0000-0x0000000005AB1000-memory.dmp

Filesize
4KB

Download
memory/3896-147-0x0000000005CA0000-0x0000000005CA1000-memory.dmp

Filesize
4KB

Download
memory/3896-148-0x0000000005DC0000-0x0000000005DC1000-memory.dmp

Filesize
4KB

Download
memory/3896-149-0x0000000006360000-0x0000000006361000-memory.dmp

Filesize
4KB

Download
memory/3896-150-0x0000000005DA0000-0x0000000005DA1000-memory.dmp

Filesize
4KB

Download
memory/3896-152-0x0000000006A30000-0x0000000006A31000-memory.dmp

Filesize
4KB

Download
memory/4016-123-0x0000000000AD1000-0x0000000000AE1000-memory.dmp

Filesize
64KB

Download
memory/4016-120-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads