nymaim | b1f81f71eb695bd1916f4250501f0a571e04e04792460070ae31397dc90a6ab9

Analysis

max time kernel
57s
max time network
59s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 00:04

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General

Target

file.exe
Size

1.5MB
MD5

09ccd03e0b7712e4b608e7f964c1bc16
SHA1

0dac9cdcef66ff6cb9ac32b3c61874a89d7db04c
SHA256

b1f81f71eb695bd1916f4250501f0a571e04e04792460070ae31397dc90a6ab9
SHA512

3b8cfef0670320f64851c6a89ae725b42bec5394f90cd23826db06a00706ab5ce92c8dc3f0f0da1ee296155c1916a5a1cc05a706e52c4f4ef8fd5594580a35aa
SSDEEP

24576:220Sx+qq0JON399Z5nT6xyvOYoDxXmRdG6rdHrb/8gXC75ld1qSVpk:2280aNdnT6AvOYoDoRXnkd1qapk

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.exeTiIk1b1.exe

pid process

860 file.tmp
1108 MitFiles138.exe
1532 TiIk1b1.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1428 file.exe
860 file.tmp
860 file.tmp
860 file.tmp
860 file.tmp
1108 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
860	file.tmp
1108	MitFiles138.exe
1532	TiIk1b1.exe

pid	process
1428	file.exe
860	file.tmp
860	file.tmp
860	file.tmp
860	file.tmp
1108	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-T326P.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-0SKFT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-U2CL7.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-KV7Q0.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-R6QAQ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-VHC9M.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-GUK9C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-V9QEV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-QBGC2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-RD8G3.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-MSVTT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-CDV2E.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-HF7MS.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-RU0GC.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

1156 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1108 MitFiles138.exe
1108 MitFiles138.exe
1108 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1156 taskkill.exe

pid	process
1156	taskkill.exe

pid	process
1108	MitFiles138.exe
1108	MitFiles138.exe
1108	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1156	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 1428 wrote to memory of 860	1428	file.exe	file.tmp
PID 860 wrote to memory of 1108	860	file.tmp	MitFiles138.exe
PID 860 wrote to memory of 1108	860	file.tmp	MitFiles138.exe
PID 860 wrote to memory of 1108	860	file.tmp	MitFiles138.exe
PID 860 wrote to memory of 1108	860	file.tmp	MitFiles138.exe
PID 1108 wrote to memory of 1532	1108	MitFiles138.exe	TiIk1b1.exe
PID 1108 wrote to memory of 1532	1108	MitFiles138.exe	TiIk1b1.exe
PID 1108 wrote to memory of 1532	1108	MitFiles138.exe	TiIk1b1.exe
PID 1108 wrote to memory of 1532	1108	MitFiles138.exe	TiIk1b1.exe
PID 1108 wrote to memory of 1804	1108	MitFiles138.exe	cmd.exe
PID 1108 wrote to memory of 1804	1108	MitFiles138.exe	cmd.exe
PID 1108 wrote to memory of 1804	1108	MitFiles138.exe	cmd.exe
PID 1108 wrote to memory of 1804	1108	MitFiles138.exe	cmd.exe
PID 1804 wrote to memory of 1156	1804	cmd.exe	taskkill.exe
PID 1804 wrote to memory of 1156	1804	cmd.exe	taskkill.exe
PID 1804 wrote to memory of 1156	1804	cmd.exe	taskkill.exe
PID 1804 wrote to memory of 1156	1804	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:1428

C:\Users\Admin\AppData\Local\Temp\is-NLV78.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-NLV78.tmp\file.tmp" /SL5="$70120,1316972,483328,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:860

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:1108

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TiIk1b1.exe
4⤵
- Executes dropped EXE
PID:1532

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:1804

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "MitFiles138.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1156

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
c9f4d76b9ceb901f93c830b0c8123f03

SHA1
3b779bb6142143674dd662b90b692837561b47e6

SHA256
98ad564a1008775518e684b1e36b82f8a52197a3662e457881716521c7744c07

SHA512
c654a3f9f04e9611208f1ef3e303638fbbb88813014846f4912f3c53a2b37d23498fda52a67054c2c91911a7e6fae6353003d2ecec8c4cb959ac68a5a6b57d82

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

MD5
c9f4d76b9ceb901f93c830b0c8123f03

SHA1
3b779bb6142143674dd662b90b692837561b47e6

SHA256
98ad564a1008775518e684b1e36b82f8a52197a3662e457881716521c7744c07

SHA512
c654a3f9f04e9611208f1ef3e303638fbbb88813014846f4912f3c53a2b37d23498fda52a67054c2c91911a7e6fae6353003d2ecec8c4cb959ac68a5a6b57d82

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NLV78.tmp\file.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NLV78.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}\TiIk1b1.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

MD5
c9f4d76b9ceb901f93c830b0c8123f03

SHA1
3b779bb6142143674dd662b90b692837561b47e6

SHA256
98ad564a1008775518e684b1e36b82f8a52197a3662e457881716521c7744c07

SHA512
c654a3f9f04e9611208f1ef3e303638fbbb88813014846f4912f3c53a2b37d23498fda52a67054c2c91911a7e6fae6353003d2ecec8c4cb959ac68a5a6b57d82

Download Submit
\Users\Admin\AppData\Local\Temp\is-2PBQ3.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-2PBQ3.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-2PBQ3.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-NLV78.tmp\file.tmp
Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TiIk1b1.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/860-81-0x0000000003640000-0x0000000004602000-memory.dmp

Filesize
15.8MB

Download
memory/860-58-0x0000000000000000-mapping.dmp

Download
memory/860-69-0x0000000003640000-0x0000000004602000-memory.dmp

Filesize
15.8MB

Download
memory/1108-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1108-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1108-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1108-66-0x0000000000000000-mapping.dmp

Download
memory/1108-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1108-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1108-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1156-84-0x0000000000000000-mapping.dmp

Download
memory/1428-54-0x0000000075071000-0x0000000075073000-memory.dmp

Filesize
8KB

Download
memory/1428-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1428-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1428-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1532-75-0x0000000000000000-mapping.dmp

Download
memory/1804-83-0x0000000000000000-mapping.dmp

Download