nymaim | be8a45ad240df06b8cb214fc86a111c7f2ac79e6ca21bb1744f970f7853b5e2e

Analysis

max time kernel
56s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 18:27

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General

Target

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe
Size

1.7MB
MD5

879bd2ae4264821cb350dd5f8f30cb0c
SHA1

29b8cf3b11ed2750c31b6fa271a9081e85972547
SHA256

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971
SHA512

11a93da54e833f53f70232fcc2e885b49dd51d417f0e007717a0cdf1a12fc59714b7a89172e5cdaff71988ea309f3c2dbed476cb31583ae3f38b41cd1178f8a6
SSDEEP

24576:220Sx+A2cxfbGU0Xjqr+5UjqWR0xMCJwXIXgmwmF0GFhNKkxgXC75ld1qSVpk:228yanXe5qRxJwXIwzmF0ajd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmpMitFiles138.exeBOwuSKTLajx.exe

pid process

536 bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
948 MitFiles138.exe
2028 BOwuSKTLajx.exe

pid	process
536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
948	MitFiles138.exe
2028	BOwuSKTLajx.exe

Loads dropped DLL 6 IoCs

Processes:

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exebd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmpMitFiles138.exe

pid	process
1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe
536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
948	MitFiles138.exe

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

Drops file in Program Files directory 17 IoCs

Processes:

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\is-S43LF.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-UPTNA.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\is-C68VK.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-JS2KA.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-4MA4N.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\is-CSEB1.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\is-B6KMR.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-TPB8A.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-NFAH0.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\is-1IJUC.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-NN7JS.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-K502P.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-0B2M9.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VKVSM.tmp	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1760 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

948 MitFiles138.exe
948 MitFiles138.exe
948 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1760 taskkill.exe

pid	process
1760	taskkill.exe

pid	process
948	MitFiles138.exe
948	MitFiles138.exe
948	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1760	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exebd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 1088 wrote to memory of 536	1088	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
PID 536 wrote to memory of 948	536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp	MitFiles138.exe
PID 536 wrote to memory of 948	536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp	MitFiles138.exe
PID 536 wrote to memory of 948	536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp	MitFiles138.exe
PID 536 wrote to memory of 948	536	bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp	MitFiles138.exe
PID 948 wrote to memory of 2028	948	MitFiles138.exe	BOwuSKTLajx.exe
PID 948 wrote to memory of 2028	948	MitFiles138.exe	BOwuSKTLajx.exe
PID 948 wrote to memory of 2028	948	MitFiles138.exe	BOwuSKTLajx.exe
PID 948 wrote to memory of 2028	948	MitFiles138.exe	BOwuSKTLajx.exe
PID 948 wrote to memory of 1200	948	MitFiles138.exe	cmd.exe
PID 948 wrote to memory of 1200	948	MitFiles138.exe	cmd.exe
PID 948 wrote to memory of 1200	948	MitFiles138.exe	cmd.exe
PID 948 wrote to memory of 1200	948	MitFiles138.exe	cmd.exe
PID 1200 wrote to memory of 1760	1200	cmd.exe	taskkill.exe
PID 1200 wrote to memory of 1760	1200	cmd.exe	taskkill.exe
PID 1200 wrote to memory of 1760	1200	cmd.exe	taskkill.exe
PID 1200 wrote to memory of 1760	1200	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe
"C:\Users\Admin\AppData\Local\Temp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1088

C:\Users\Admin\AppData\Local\Temp\is-3CDMB.tmp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
"C:\Users\Admin\AppData\Local\Temp\is-3CDMB.tmp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp" /SL5="$60126,1516097,483328,C:\Users\Admin\AppData\Local\Temp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:536

C:\Program Files (x86)\Mit Files\MitFiles138.exe
"C:\Program Files (x86)\Mit Files\MitFiles138.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:948

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BOwuSKTLajx.exe
4⤵
- Executes dropped EXE
PID:2028

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1200

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "MitFiles138.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1760

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe
Filesize
1.9MB

MD5
a1d4ffe05a15fb5a7cc3abd5062c003f

SHA1
1dd6172cb5156422b4a0dd1bb10f44f8ea923a5a

SHA256
e3c818c9bd752f3f551f1dca313ca5e211b804e0d1664fe7b51c9f64b74005bd

SHA512
67c6f60e9c96739a102e0945d2e156d674460193c18f45481a9d5565797a953e969f9352fa4c838365856599c4f0b2e7a0ab95ce427fb362aae262ed7152ead7

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe
Filesize
1.9MB

MD5
a1d4ffe05a15fb5a7cc3abd5062c003f

SHA1
1dd6172cb5156422b4a0dd1bb10f44f8ea923a5a

SHA256
e3c818c9bd752f3f551f1dca313ca5e211b804e0d1664fe7b51c9f64b74005bd

SHA512
67c6f60e9c96739a102e0945d2e156d674460193c18f45481a9d5565797a953e969f9352fa4c838365856599c4f0b2e7a0ab95ce427fb362aae262ed7152ead7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3CDMB.tmp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3CDMB.tmp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BOwuSKTLajx.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Mit Files\MitFiles138.exe
Filesize
1.9MB

MD5
a1d4ffe05a15fb5a7cc3abd5062c003f

SHA1
1dd6172cb5156422b4a0dd1bb10f44f8ea923a5a

SHA256
e3c818c9bd752f3f551f1dca313ca5e211b804e0d1664fe7b51c9f64b74005bd

SHA512
67c6f60e9c96739a102e0945d2e156d674460193c18f45481a9d5565797a953e969f9352fa4c838365856599c4f0b2e7a0ab95ce427fb362aae262ed7152ead7

Download Submit
\Users\Admin\AppData\Local\Temp\is-3CDMB.tmp\bd9cc78bad7f862d4b27699c372c36196901150c7db6f93a14ef62c6bd3e5971.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Local\Temp\is-CFHOL.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-CFHOL.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-CFHOL.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\BOwuSKTLajx.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/536-81-0x00000000035B0000-0x00000000045A1000-memory.dmp

Filesize
15.9MB

Download
memory/536-58-0x0000000000000000-mapping.dmp

Download
memory/536-69-0x00000000035B0000-0x00000000045A1000-memory.dmp

Filesize
15.9MB

Download
memory/948-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/948-73-0x0000000000400000-0x00000000013F1000-memory.dmp

Filesize
15.9MB

Download
memory/948-66-0x0000000000000000-mapping.dmp

Download
memory/948-70-0x0000000000400000-0x00000000013F1000-memory.dmp

Filesize
15.9MB

Download
memory/948-82-0x0000000000400000-0x00000000013F1000-memory.dmp

Filesize
15.9MB

Download
memory/948-71-0x0000000000400000-0x00000000013F1000-memory.dmp

Filesize
15.9MB

Download
memory/948-85-0x0000000000400000-0x00000000013F1000-memory.dmp

Filesize
15.9MB

Download
memory/1088-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1088-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1088-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1088-54-0x0000000074D61000-0x0000000074D63000-memory.dmp

Filesize
8KB

Download
memory/1200-83-0x0000000000000000-mapping.dmp

Download
memory/1760-84-0x0000000000000000-mapping.dmp

Download
memory/2028-75-0x0000000000000000-mapping.dmp

Download