nymaim | a2a3fc41158553429651ba353566b5adcc16864179e6aeac410c663423af1b7c

Analysis

max time kernel
82s
max time network
85s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 18:47

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General

Target

file.exe
Size

1.5MB
MD5

70af507ea49c52c779ba2d74b191b8c0
SHA1

a8e51dedc187e41365be005effdcb620c045bfc4
SHA256

a2a3fc41158553429651ba353566b5adcc16864179e6aeac410c663423af1b7c
SHA512

3e70e921e67b3106d57bb7b901694c46a15183112a0165019d7820019a28cdeed13794ab7f1d5d92497d6842647ab031c1875477d7f33c9b56725f999dfcb319
SSDEEP

24576:220Sx+pCIXbjfOkGbSPjCfyRn8hOFYkX02txgXC75ld1qSVpk:228IuXfbCin6MpX0Gd1qapk

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:

file.tmpMitFiles138.exeNfPYObVxeXG.exe

pid process

972 file.tmp
900 MitFiles138.exe
1496 NfPYObVxeXG.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1992 file.exe
972 file.tmp
972 file.tmp
972 file.tmp
972 file.tmp
900 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

pid	process
972	file.tmp
900	MitFiles138.exe
1496	NfPYObVxeXG.exe

pid	process
1992	file.exe
972	file.tmp
972	file.tmp
972	file.tmp
972	file.tmp
900	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\is-P2SQI.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-V0GH7.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-11SRM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VRSPV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-MMLHT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-GR7H6.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-4EVV2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VUFHN.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-6E6U2.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-J3K1I.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LD7AM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-EAQ78.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-RP1BM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-1SKE6.tmp	file.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

240 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

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

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 240 taskkill.exe

pid	process
240	taskkill.exe

pid	process
900	MitFiles138.exe
900	MitFiles138.exe
900	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	240	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 1992 wrote to memory of 972	1992	file.exe	file.tmp
PID 972 wrote to memory of 900	972	file.tmp	MitFiles138.exe
PID 972 wrote to memory of 900	972	file.tmp	MitFiles138.exe
PID 972 wrote to memory of 900	972	file.tmp	MitFiles138.exe
PID 972 wrote to memory of 900	972	file.tmp	MitFiles138.exe
PID 900 wrote to memory of 1496	900	MitFiles138.exe	NfPYObVxeXG.exe
PID 900 wrote to memory of 1496	900	MitFiles138.exe	NfPYObVxeXG.exe
PID 900 wrote to memory of 1496	900	MitFiles138.exe	NfPYObVxeXG.exe
PID 900 wrote to memory of 1496	900	MitFiles138.exe	NfPYObVxeXG.exe
PID 900 wrote to memory of 640	900	MitFiles138.exe	cmd.exe
PID 900 wrote to memory of 640	900	MitFiles138.exe	cmd.exe
PID 900 wrote to memory of 640	900	MitFiles138.exe	cmd.exe
PID 900 wrote to memory of 640	900	MitFiles138.exe	cmd.exe
PID 640 wrote to memory of 240	640	cmd.exe	taskkill.exe
PID 640 wrote to memory of 240	640	cmd.exe	taskkill.exe
PID 640 wrote to memory of 240	640	cmd.exe	taskkill.exe
PID 640 wrote to memory of 240	640	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992

C:\Users\Admin\AppData\Local\Temp\is-RBO8K.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-RBO8K.tmp\file.tmp" /SL5="$70122,1344980,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:972

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:900

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\NfPYObVxeXG.exe
4⤵
- Executes dropped EXE
PID:1496

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:640

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "MitFiles138.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:240

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
1.8MB

MD5
26aa065139b666d51224a95c2dad6f76

SHA1
e949eedd459cc2a4ee88fee164a9aa9eb67243e4

SHA256
8a3cfc3037cc83f2e30f64d08ce82b2d664d4f5fd89ba33b2aa95af6f7b2ed18

SHA512
b7873fa7e278a18e7299ab99902bde94c100cbd38291b3cc9926e2ecca1bcd33b3a077cb804741f11fe219cd1c7efac8101182747b52431c3ba8b480d0d5c160

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe
Filesize
1.8MB

MD5
26aa065139b666d51224a95c2dad6f76

SHA1
e949eedd459cc2a4ee88fee164a9aa9eb67243e4

SHA256
8a3cfc3037cc83f2e30f64d08ce82b2d664d4f5fd89ba33b2aa95af6f7b2ed18

SHA512
b7873fa7e278a18e7299ab99902bde94c100cbd38291b3cc9926e2ecca1bcd33b3a077cb804741f11fe219cd1c7efac8101182747b52431c3ba8b480d0d5c160

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RBO8K.tmp\file.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RBO8K.tmp\file.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Mit Files\MitFiles138.exe
Filesize
1.8MB

MD5
26aa065139b666d51224a95c2dad6f76

SHA1
e949eedd459cc2a4ee88fee164a9aa9eb67243e4

SHA256
8a3cfc3037cc83f2e30f64d08ce82b2d664d4f5fd89ba33b2aa95af6f7b2ed18

SHA512
b7873fa7e278a18e7299ab99902bde94c100cbd38291b3cc9926e2ecca1bcd33b3a077cb804741f11fe219cd1c7efac8101182747b52431c3ba8b480d0d5c160

Download Submit
\Users\Admin\AppData\Local\Temp\is-PHLO7.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-PHLO7.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-PHLO7.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-RBO8K.tmp\file.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/240-84-0x0000000000000000-mapping.dmp

Download
memory/640-83-0x0000000000000000-mapping.dmp

Download
memory/900-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/900-78-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/900-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/900-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/900-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/900-79-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/900-67-0x0000000000000000-mapping.dmp

Download
memory/972-77-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/972-58-0x0000000000000000-mapping.dmp

Download
memory/972-69-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/1496-75-0x0000000000000000-mapping.dmp

Download
memory/1992-54-0x0000000075151000-0x0000000075153000-memory.dmp

Filesize
8KB

Download
memory/1992-65-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1992-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1992-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download