nymaim | f656facd5a4f01d087dae1ab49a12040b80ff9d90fdbf890945fa9cfba929894

Analysis

max time kernel
60s
max time network
62s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 07:34

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General

Target

file.exe
Size

1.5MB
MD5

6d0af6f42cfdd778b7911be42f6e4161
SHA1

7b28678ce7b46a5cf5d7c5a147f486b564714702
SHA256

f656facd5a4f01d087dae1ab49a12040b80ff9d90fdbf890945fa9cfba929894
SHA512

ac33d7ce81ad53d64b29c9257650c23018f8271ae6a5abfd317997759a51cb7e25465f6a1ba8978087f9b6d1abe3d3f4ef4531604b8ab7650f5a51e3f8cbb043
SSDEEP

24576:220Sx+Gm7L8eBYlPAKw1/6jHpEISkkt0MoE1gXC75ld1qSVpk:2283L8eBYGKo9R7tuEld1qapk

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.exeATXmw8.exe

pid process

1804 file.tmp
1768 MitFiles138.exe
2004 ATXmw8.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1140 file.exe
1804 file.tmp
1804 file.tmp
1804 file.tmp
1804 file.tmp
1768 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
1804	file.tmp
1768	MitFiles138.exe
2004	ATXmw8.exe

pid	process
1140	file.exe
1804	file.tmp
1804	file.tmp
1804	file.tmp
1804	file.tmp
1768	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-KUIDT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-NL6SI.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-5A6QQ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LLU9L.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-4KKN9.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-2KN75.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-P466B.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-3C6CL.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-IU98D.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-GF90E.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-IS9O4.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-OOV9U.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-T5LQT.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\language\is-7REMH.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

1844 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1768 MitFiles138.exe
1768 MitFiles138.exe
1768 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1844 taskkill.exe

pid	process
1844	taskkill.exe

pid	process
1768	MitFiles138.exe
1768	MitFiles138.exe
1768	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1844	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1140 wrote to memory of 1804	1140	file.exe	file.tmp
PID 1804 wrote to memory of 1768	1804	file.tmp	MitFiles138.exe
PID 1804 wrote to memory of 1768	1804	file.tmp	MitFiles138.exe
PID 1804 wrote to memory of 1768	1804	file.tmp	MitFiles138.exe
PID 1804 wrote to memory of 1768	1804	file.tmp	MitFiles138.exe
PID 1768 wrote to memory of 2004	1768	MitFiles138.exe	ATXmw8.exe
PID 1768 wrote to memory of 2004	1768	MitFiles138.exe	ATXmw8.exe
PID 1768 wrote to memory of 2004	1768	MitFiles138.exe	ATXmw8.exe
PID 1768 wrote to memory of 2004	1768	MitFiles138.exe	ATXmw8.exe
PID 1768 wrote to memory of 1508	1768	MitFiles138.exe	cmd.exe
PID 1768 wrote to memory of 1508	1768	MitFiles138.exe	cmd.exe
PID 1768 wrote to memory of 1508	1768	MitFiles138.exe	cmd.exe
PID 1768 wrote to memory of 1508	1768	MitFiles138.exe	cmd.exe
PID 1508 wrote to memory of 1844	1508	cmd.exe	taskkill.exe
PID 1508 wrote to memory of 1844	1508	cmd.exe	taskkill.exe
PID 1508 wrote to memory of 1844	1508	cmd.exe	taskkill.exe
PID 1508 wrote to memory of 1844	1508	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:1140
- C:\Users\Admin\AppData\Local\Temp\is-I569V.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-I569V.tmp\file.tmp" /SL5="$60126,1330527,483328,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:1804
- - 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:1768
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ATXmw8.exe
      4⤵
      Executes dropped EXE
      PID:2004
  - - 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:1508
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1844

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:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
35f3fcb87a84fed1040b1b92817c5e75

SHA1
b2d8e667905d9ad8998893a8ddb6b9b7557e730b

SHA256
317bab3153f9f57578f22fa66e045f3a169211fef8beffa007c83bdb66c4204a

SHA512
2e5c4cc559a53270d409579030958651b251be497b6f000167f06c683bf445fe947f95e827fce3e3dea194ed970ea4f3483e9bf45bc31716cc3bac3f8f2705f5

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

Filesize
1.8MB

MD5
35f3fcb87a84fed1040b1b92817c5e75

SHA1
b2d8e667905d9ad8998893a8ddb6b9b7557e730b

SHA256
317bab3153f9f57578f22fa66e045f3a169211fef8beffa007c83bdb66c4204a

SHA512
2e5c4cc559a53270d409579030958651b251be497b6f000167f06c683bf445fe947f95e827fce3e3dea194ed970ea4f3483e9bf45bc31716cc3bac3f8f2705f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I569V.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I569V.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}\ATXmw8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
1.8MB

MD5
35f3fcb87a84fed1040b1b92817c5e75

SHA1
b2d8e667905d9ad8998893a8ddb6b9b7557e730b

SHA256
317bab3153f9f57578f22fa66e045f3a169211fef8beffa007c83bdb66c4204a

SHA512
2e5c4cc559a53270d409579030958651b251be497b6f000167f06c683bf445fe947f95e827fce3e3dea194ed970ea4f3483e9bf45bc31716cc3bac3f8f2705f5

Download Submit
\Users\Admin\AppData\Local\Temp\is-B6689.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-B6689.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-B6689.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-I569V.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ATXmw8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1140-87-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1140-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1140-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1140-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

Filesize
8KB

Download
memory/1508-84-0x0000000000000000-mapping.dmp

Download
memory/1768-70-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-73-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-71-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-78-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-79-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1768-83-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-86-0x0000000000400000-0x00000000013C5000-memory.dmp

Filesize
15.8MB

Download
memory/1768-66-0x0000000000000000-mapping.dmp

Download
memory/1804-77-0x0000000003630000-0x00000000045F5000-memory.dmp

Filesize
15.8MB

Download
memory/1804-69-0x0000000003630000-0x00000000045F5000-memory.dmp

Filesize
15.8MB

Download
memory/1804-58-0x0000000000000000-mapping.dmp

Download
memory/1844-85-0x0000000000000000-mapping.dmp

Download
memory/2004-75-0x0000000000000000-mapping.dmp

Download